GB/T3286.9-2014
石灰石及白云石化学分析方法第9部分：二氧化碳含量的测定烧碱石棉吸收重量法
Methodforchemicalanalysisoflimestoneanddolomite―Part9:Thedeterminationofcarbondioxidecontent―Thecausticasbestosabsorptiongravimetricmethod
- 中国标准分类号（CCS）D52
- 国际标准分类号（ICS）73.080
- 实施日期2015-01-01
- 文件格式PDF
- 文本页数36页
- 文件大小842.48KB
以图片形式预览石灰石及白云石化学分析方法第9部分：二氧化碳含量的测定烧碱石棉吸收重量法
石灰石及白云石化学分析方法第9部分：二氧化碳含量的测定烧碱石棉吸收重量法
国家标准 GB/T3286.9一2014 代替GB328s6.9-1998 石灰石及白云石化学分析方法 第9部分;二氧化碳含量的测定 烧碱石棉吸收重量法 MethodforchemicalanalysisoflimestoneanddolomitePart9: Thedetermnationofearbondioxidecontent一Ihecaustie sbest0sabsorptogravimetricmethod 2014-06-09发布 2015-01-01实施 国家质量监督检验检疫总局 发布 国家标准化管理委员会国家标准
GB/3286.g一2014 目 次 前言 范围 规范性引用文件 原理 试剂 仪器及装置 制样 分析步骤 测定次数 7. 7.2试料量 7.3仪器及装置的检查 仪器及装置的校验 7.
测定 分析结果计算及其表示 分析结果的计算 8.1 8.2分析结果的确定和表示 允许差 10试验报告 附录A规范性附录)试样分析结果接受程序流程图 附录B(资料性附录燃烧气体容量法测定冶金石灰中二氧化碳量 附录c(资料性附录)温度、气压补正系数表
GB/3286.g一2014 前 言 GB/T3286《石灰石及白云石化学分析方法》分为九个部分: -第1部分:氧化钙和氧化镁含量的测定络合滴定法和火焰原子吸收光谱法 第2部分;二氧化硅含量的测定硅钼蓝分光光度法和高氧酸脱水重量法; 第3部分:氧化铝含量的测定铬天青s分光光度法和络合滴定法; 第4部分;氧化铁含量的测定 邻二氮杂菲分光光度法和火焰原子吸收光谱法; 第5部分:氧化钰含量的测定高碘酸盐氧化分光光度法; 第6部分磷含量的测定磷钼蓝分光光度法; 第7部分;硫含量的测定管式炉燃烧-碘酸钾滴定法,高频燃烧红外吸收法和硫酸钏重量法; 第8部分;灼烧减量的测定 重量法; 第9部分;二氧化碳含量的测定烧碱石棉吸收重量法
本部分为GB/T3286的第9部分
本部分按照GB/T1.1-2009给出的规则起草
本部分代替GB/T3286.9一1998《石灰石、白云石化学分析方法二氧化碳量的测定》
本部分与GB/T3286.91998相比,主要技术变化如下 将标准名称改为《石灰石及白云石化学分析方法第9部分;二氧化碳量的测定烧碱石棉吸 收重量法》; 规范性引用文件取消了引用标准年号,并增加了部分引用标准; 增加了对分析中所用试剂和水的质量等级要求; 增加了分析结果的确定和表示 分析步骤中增加了测定次数及说明 增加了试验报告; 增加了“试样分析结果接受程序流程图”作为规范性附录A,将原附录A和附录B分别改为附 录B和附录c作为资料性附录
本部分由钢铁工业协会提出
本部分由全国钢标准化技术委员会(SAC/Tc183)归口
本部分起草单位;武汉钢铁(集团)公司,武汉科技大学、冶金工业信息标准研究院
本部分主要起草人;闻向东,徐建平,邵梅、张穗忠、陈士华、曹宏燕、王洪红、仇金辉、高建平、王姜维
本部分所代替标准的历次版本发布情况为 -GB/T3286.9一1982,GB/T3286,9一1998
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GB/3286.g一2014 石灰石及白云石化学分析方法 第9部分;二氧化碳含量的测定 烧碱石棉吸收重量法 警告;使用本部分的人员应有正规实验室工作实践经验
本部分未指出所有可能的安全问题
使 用者有责任采取适当的安全和健康措施,并保证符合国家有关法规规定的条件
范围 GB/T3286的本部分规定了用烧碱石棉吸收重量法测定二氧化碳含量
本部分适用于石灰石、白云石中二氧化碳含量的测定,也适用于冶金石灰中二氧化碳含量的测定
石灰石、白云石中测定范围质量分数):二氧化碳含量30%50%;冶金石灰中测定范围质量分数): 二氧化碳含量大于0.50%
规范性引用文件 下列文件对于本文件的应用是必不可少的
凡是注日期的引用文件,仅注日期的版本适用于本文 件
凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件 GB/T2007.2散装矿产品取样、制样通则手工制样方法 GB/T6682分析实验室用水规格和试验方法 GB/T8170数值修约规则与极限数值的表示和判定 原理 试料用磷酸分解,以除去二氧化碳的干燥空气作载气,所生成的二氧化碳用烧碱石棉吸收,根据其 增加的质量,计算二氧化碳含量
试料分解过程中所产生的水分用硫酸及高氯酸镁吸收,硫化物所产生的硫化氢用三氧化铬硫酸溶 液吸收除去
试剂 4.1分析中除另有说明外,仅使用认可的分析纯试剂和符合GB/T6682规定的三级以上蒸僧水或其 纯度相当的水
4.2钠石灰
4.3烧碱石棉,粒度0.5mm~1mm
4.4无水高氯酸镁,粒度0.5 ,在干燥箱中于180干燥2h,迅速移于干燥器中,冷却 mm一lmm， 备用
注，使用过的高叙酸镁干燥后可重复使用
4.5无水氯化钙
4.6高纯碳酸钙,不低于99.99%
4.7脱水硫酸:将硫酸(p=1.84 4g/mL)置于烧杯中,加热至冒烟并保持片刻,稍冷,小心置于干燥器中
GB/T3286.g一2014 冷却备用
4.8磷酸,1十1
三氧化锦碗酸游液,10《/L 4.9 取1只三氧化铬于烧杯中,加1ml水,加人100mL硫酸(p=1.84g/mL)溶解,混匀
仪器及装置 测量二氧化碳装置见图1
Tg飞 空 说明 -微型玻璃转子流量计: 二通活塞玻璃管; 干燥塔 气体洗瓶 9、,10,14 2,3、13 -特制加酸管; 1l、12 -U形管; 特制连接管; 15 水流抽气管; 溶样锥形瓶; A、,B.G,D_F、H -弹簧火; -玻璃导管 -活塞
6. C、E 直型冷凝管; 图1二氧化碳测定装置示意图 一 脱鹿棉 高氧酸锁约占1/5 烧贼石棉(约占4/5) 图2吸收二氧化碳U形管填充示意图
GB/T3286.9一2014 单位为毫米 磨砂 品 图3二氧化碳吸收瓶 5.1转子流量计(图1说明中1),20mL/min2001 /min,用于观察作为载气的空气之流量
N 5.2干燥塔(图1说明中2);容积约500mL,内盛钠石灰(4.2). 5.3干燥塔(图1说明中3);容积约500ml,内盛无水氯化钙(4.5). 5.4特制加酸管(图1说明中4),容积30mL 5.5特制连接管(图1说明中5),用双孔橡皮塞与干燥塔(5.3)和特制加酸管(5.4)连接
5.6溶样锥形瓶(图1说明中6),容积150ml250ml.,用双孔橡皮塞与特制连接管(5.5)和直形冷凝 管(5.7)连接
玻璃导管(图1说明中6.1),内径2mm~3mm,末端向上弯成小钩状,通过橡皮塞与特制连接管(5.5) 连接
5.7直形冷凝管(图1说明中7),外套管长约300mm
5.8二通活塞玻璃管(图1说明中8)
5.9气体洗瓶(图1说明中9),内盛三氧化铬硫酸溶液(4.9)
5.10气体洗瓶(图1说明中10),内盛脱水硫酸(4.7),同时可观察产生气泡的速度
5.11U形管(图1说明中l1,具有侧管及玻璃活塞,13mm×100mm),用无水高氯酸镁(4.4)填充
5.12吸收二氧化碳U形管(图1说明中12,规格同U形管(5.11)),内盛不少于8烧碱石棉(4.3)及 .4),其填充法见图2
约2《无水高氧酸铁(. 注，此吸收二氧化碳U形管可用吸收瓶(规格见图3)代替,瓶下部装约40mm高的烧碱石棉(4.3),上部装10mm 高的无水高氯酸锁(4,4),中间和上部铺少量脱脂棚
5.13干燥塔(图1说明中13),下半部盛无水氯化钙(4.5),上半部盛钠石灰(4.2),中间以脱脂棉隔开
气体洗瓶(图1说明中14),内盛水 5.14 水流抽气管(图1说明中15),与水龙头连接
5.15 5.16装置各部分按图1以适当长度的胶管连接,并以相应的夹具固定各装置
制样 6.1按GB/T2007.2制备试样
GB/T3286.9一2014 6.2试样应加工至粒度小于0.125mm. 6.3石灰石,白云石试样分析前在105C110C干燥2h,置于干燥器中冷却至室温 6.4冶金石灰试样的制备应迅速进行,制成后试样立即置于磨口瓶或塑料袋中密封,于干燥器中保存， 分析前试样不进行干燥
分析步骤 7.1 测定次数 对同一试样(6.3或6.4),至少独立测定两次
7.2试料量 石灰石、白云石试样称取0.50段试料,精确至0.0001g
对冶金石灰,应快速称取试料,二氧化碳 量小于10.0%时,称取2.0g试料,大于10.0%时,称取1.0只试料,精确至0.0001g
7.3仪器及装置的检查 7.3.1检查之前,测定系统中各弹簧夹及活塞,除C关闭外,其余均处于开启状态
7.3.2打开抽气水门,控制水流速度,使测量系统的气流速度稳定在200mL/min左右
7.3.3调节活塞后,使气流速度保持在180mL/min左右
关闭A,保持数分钟,此时气体洗瓶(5.10) 和气体洗瓶(5.14)中气泡应逐渐减少直至消失
否则,说明测定系统中有漏气之处,如有漏气,应逐段 检查,查明漏气部位并进行处理,直至整个系统严密不漏气
7.4仪器及装置的校验 仪器及装置的校验按7.5操作,称取0.50g(精确至0.0001日)已于105C110C干燥2h并冷却 至室温的碳酸钙(4.6)作为试料,测得的二氧化碳量在43.97%士0.35%范围内时,说明测定系统无误， 即可进行试样分析
7.5测定 7.5.1调节活塞E,使气流速度控制在170mL/nmin180mL/nmin,保持约15min
关闭F,待气体洗 瓶(5,10)中气泡停止后,依次关闭吸收二氧化碳U形管(5.12)和U形管(5.11)的活塞,将吸收二氧化碳 U形管(5.12)取下
以洁净纱布轻轻擦拭,于天平箱中放置15nmin,称量
注，当空气相对湿度小于45%,用微湿纱布擦拭,以消除静电作用对称量的影响
7.5.2再将吸收二氧化碳U形管(5.12)连接于测定系统中,按7.5.1操作,直至前后二次称量差不大于 0.5mg,取最后一次称得之质量为吸收二氧化碳前U形管(5.12)的质量
7.5.3连接好吸收二氧化碳U形管(5.12),关闭B,D,取下溶样锥形瓶(5.6),将试料(7.2)转移至溶样 锥形瓶(5.6)中,以少量水冲洗杯壁
7.5.4将溶样锥形瓶(5.6)连接在测定装置中,打开D和直形冷凝管(5.7)的水流
于特制加酸管(5.5) 中加人15m磷酸(4.8)(石灰试样加30mL磷酸),缓缓打开活塞c,滴加4滴~5滴磷酸(4.8),待剧 烈反应停止后再加4滴一5滴,如此反复,直至反应完毕
将特制加酸管(5.4)中余酸加人溶样锥形瓶 5.6)中(留有1mL2mL.),于特制加酸管(5.4)中加10ml.水,打开C,将水加人溶样锥形瓶(5.6)中 关闭cC留有1mL2mL水)
将溶样锥形瓶(5.6)缓缓加热至沸并保持2nmin,关闭热源
1180 7.5.5打开B,调节活塞E,使气流保持在170mL/nmin mL/min,保持通气约1.5h 7.5.6关闭F,待气体洗瓶(5.10)中气泡停止,依次关闭吸收二氧化碳U形管(5.12)和U形管(5.11)的 活塞,将吸收二氧化碳U形管(5.12)取下
以洁净纱布轻轻擦拭见7.5.1注),于天平箱中放置
GB/3286.g一2014 15 min,称量
7.5.7再将吸收二氧化碳U形管(5.12)连接于测定系统中,打开相应活塞和弹簧夹,重新通气约 20min 1,以下按7.5.6操作,如此反复,直至前后二次质量差不大于0.5mg,取最后一次称得的质量为吸 收二氧化碳U形管(5.,12)的质量
注1:全部测定过程需连续进行
注2;当吸收二氧化碳U形管(5.12)中的烧碱石棉有约2/3变白时,应更换按图2填充烧碱石棉的新U形管
7.5.8测定完毕,将吸收二氧化碳U形管(5.12)连接在测定系统中,依次关闭B,D,G、H,最后关闭抽 气水门,防止水倒流
分析结果计算及其表示 8.1分析结果的计算 按式(1)计算二氧化碳的质量分数 m1一m ×100% w'eo N 式中: 二氧化碳的质量分数(%); w'co 吸收二氧化碳后U形管质量,单位为克g) nn 吸收二氧化碳前U形管质量,单位为克(g); 12 -试料量,单位为克(g).
mn 8.2分析结果的确定和表示 同一试样两次独立分析结果差值的绝对值如不大于实验室内允许差,则取其算术平均值作为分析 结果
如果两次独立分析结果差值的绝对值大于实验室内允许差,则按附录A的规定追加测量次数并 确定分析结果
分析结果按GB/T8170修约,将数值修约到两位小数 允许差 实验室内两个独立分析结果的差值和两个实验室分析结果的差值不应大于表1所列相应允许差
对冶金石灰试样,不作实验室间允许差要求
表1允许差 二氧化碳的质量分数 实验室内允许差R 实验室间允许差" 石灰石、白云石 0.40 0.50 5.00 0.25 冶金石灰 >5.0010.00 0.30 >10,00 0.40 10 试验报告 试验报告应包括下列内容:
GB/T3286.9一2014 识别样品、实验室和分析日期等资料; a b)引用标准 遵守本部分规定的程度; d分析结果及其表示; 测定中观察到的异常现象 e 本部分未规定的操作,或任何可能影响结果的操作
GB/3286.g一2014 附 录A 规范性附录 试样分析结果接受程序流程图 从独立结果开始 分析结果y、 一M - 香 再次测定月 十土 |,一y,mk1.2 再次剥定 土十十2 Jya一ys1.3R =5 川=中位值(y,y,、 图A.1试样分析结果接受程序流程图
GB/T3286.g一2014 附 录 B 资料性附录 燃烧气体容量法测定冶金石灰中二氧化碳量 B.1范围 本方法适用于不含有机物及游离碳的石灰中二氧化碳量的测定,测定范围质量分数);二氧化碳含 量大于0.50%
B.2原理 试料于高温管式炉内通氧燃烧,碳酸盐分解,产生的二氧化碳等混合气体经干燥,除硫后收集于量 气管中,定容,然后以氢氧化钾溶液吸收混合气体中的二氧化碳
吸收前后气体体积之差为二氧化碳体 积,由此计算二氧化碳量
B.3试剂 B.3.1烧碱石棉,粒度0.5” mm一 一lmm
B.3.2无水氯化钙
B.3.3无水高氯酸镁,粒度0.5 mm一lmm
B.3.4粒状活性二氧化猛(或粒状钥酸银). B3.5硫酸p=1.84g/mL. B,3.6高锰酸钾-氢氧化钾溶液;取30g氢氧化钾溶于70ml高酸钾饱和溶液中 B.3.7 氢氧化钾溶液,400g/L B.3.8酸性水:于1000ml硫酸(1十1000),加数滴甲基橙溶液(0.1g/100mL),溶液呈淡红色,混匀
B.3.9氧化销酸性溶液.,260g/L,加数滴甲基橙溶液(o.1g/100mL),滴加硫酸(I+1)至渎红色 B.4仪器及装置 二氧化碳测量装置见图B,1
GB/3286.g一2014 查 说明: 氧气瓶 减压阀及氧气表; -缓冲瓶 4,5 洗气瓶 干燥塔 通氧活塞" -耐热连接塞 高温管式炉 10o 温度自动控制器; 干燥管 1 12 -除硫管; 13 定碳仪(a冷凝管,b量气管,c水准瓶,d吸收器,e小三通活塞,f大三通话塞) 14 燃烧管; 15 瓷舟 图B.1 二氧化碳测量装置示意 B.4.1气瓶(图B.1说明中1). B.4.2减压阀及氧气表(图B.1说明中2)
B43缓冲瓶(图B1说明中3) B.4.4洗气瓶(图B.1说明中4),内盛高钮酸-氢氧化钾溶液(B.3.6),装人量占瓶高三分之 B.45洗气瓶(图B1说明中5),内盛硫酸(B.3.1),装人量占瓶高三分之 干燥塔(图B.1说明中6),上层装烧碱石棉(B.3.1),下层装无水氯化钙(B3.2),中间隔以玻璃 B.4.6 棉,底部及顶端铺以玻璃棉
B.4.7通氧活塞(图B.l说明中7 B.4.8耐热连接塞(图B.1说明中8),带侧管,与通氧活塞(B.4.7)连接
B.49高温管式炉(图B说明中9),附热电偶及温度自动控制装置(图B1说明中10). B.4.10干燥管(图B.1说明中11),内装无水高氯酸镁(B.3.3),两端铺以玻璃棉,干燥能力降低时及时 更换高氧酸镁
注，吸水的高氯酸镁可在干燥箱中于180C干燥2h后重复使用 B.4.11除硫管(图B.1说明中12),内装粒状活性二氧化(B.3.4),两端铺以玻璃棉
可用粒状钥酸 银代替粒状二氧化缸
mm500mm B.4.12定碳仪(气体体积测量仪,图B.1说明中13)
定碳仪应装置在距高温管式炉300n 位置,避免阳光照射
定碳仪基本部件为: 冷凝管
GB/T3286.9一2014 b量气管,量气管内装有酸性水(B.3.8)或氯化钠酸性溶液(B.3.9)
量气管须保持清洁,有水滴 附着量气管内壁时,需用铬酸洗液洗净 水准瓶
c) d) 吸收器,内盛氢氧化钾溶液(B.3.7).
小 三通活塞,连接冷凝管[B.4.12a)]和量气管[B.4.12b)],亦可分别使冷凝管[B.4.12a)]或量 气管[B.4.12b]与大气相通
大三通活塞,使盘气管分别与冷凝管[B.4.12a)]或吸收器[B.4.12d]相通
fD B.4.13燃烧管(图B.1说明中14),长600nmm内径23mm
粗口端与耐热连接塞(B.4.8)连接,锥形 端与除硫管(B.4.11)连接
使用时先检查是否漏气,然后分段灼烧
B.4.14瓷舟(图B.1说明中15),长88mm或97mm,使用前在1200C管式炉内通氧灼烧2min~ 4min,或在1000C,高温炉内灼烧1h,冷却后贮存于盛有烧碱石棉(或钠石灰)和无水氯化钙的未涂 油的干燥器中备用
B.4.15长钩,用低碳镍铬丝或耐热合金丝制成,用于推进和拉出瓷舟
B.4.16装置各部分按图B.1以适当长度胶管连接
B.5制样 B.5.1按GB/T2007.2制备试样
B.5.2试样应加工至粒度小于0.125mm
B.5.3冶金石灰试样的制备应迅速进行,制成后试样立即置于磨口瓶或塑料袋中密封,于干燥器中保 存,分析前试样不进行干燥
B.6分析步骤 B.6.1测定次数 对同一试样(B.5.2或B.5.3),至少独立测定两次
B.6.2试料量 按表B.1称取试料,精确至0.0001g
对冶金石灰,应快速称取试料
表B.1不同含量称取的试料量 二氧化碳的质量分数" /% 试料量/g 0.505.0 1.0 >5.,0~10.0 0.50 >10,0 0.2o B.6.3空白试验 随同试料做空白试验
注:量气管[B.4.12b]、吸收器[B.4.12d)]内的溶液与待测混合气体的温度应保持一致.否则将产生正、负空白值
分析前应反复作空白试验直至空白值稳定
由于室温的变化和分析中冷凝管[B.4.12a)]内水温的变化.在测量 试料的过程中须经常作空白试验,并从试料的测量值中扣除空白值
10o
GB/3286.g一2014 B.6.4测定 B,6.4.1按图B.1连接好二氧化碳测量装置
更换量气管[B.4.12b]吸收器[B,4.12d)]内溶液,或更 换干燥剂、除硫剂后,均应先作几个高碳试样,以二氧化碳饱和后方开始分析试样
B,6.4.2将炉温升至1200C1500C,通氧检查并调节装置,使其严密不漏气
调节并保持装置在 准备工作状态
B,6.43将试料(B.6.2)置于瓷舟(B.4.l4)中
开启耐热连接塞(B.4.8),将瓷舟(B.4.13)放人燃烧管 B.4.14)内,用长钩(B.4.15)将其推至高温区,立即塞紧耐热连接塞(B.4.8)
B,6.44开通定碳仪大、小三通活塞[B,4.12),B,.4.12e)]使瓷管(B.4.13)与量气管[B,.4.12b)]相通,预 热60s
B.6.4.5开启通氧活塞(B.4.7),调节通氧迷度,控制在约90s内,使二氧化碳和载气混合气体充满量气 管,关闭通氧活塞(B.4.7)
以下按定碳仪操作步骤操作,测量定碳仪量气管[B.4.12b]标尺上二氧化碳 量的读数(体积或含量
注;对二氧化碳量大于10.0%的试样,须再次通氧测定系统中残留的二氧化碳量
再次测量的读数之和为试样中 二氧化碳量的读数
B.6.4.6开启耐热连接塞(B.4.8),用长钩(B,4.15)将瓷舟(B.4.14)拉出,塞上耐热连接塞(B,4.8). B.7分析结果的计算 B.7.,1当量气管标尺读数是体积(mL)时,按式(B.1)计算二氧化碳的质量分数 A.V
×100% (B.1 w'o 71 式中 二氧化碳的质量分数(%); w
温度16、气压101.3kPa,封闭液面上每毫升二氧化碳的质量(g)
用酸性水(B.3.8)作 封闭液时.A值为0.001834g/mL
用氯化钠酸性溶液(B.3.9)作封闭液时,A值 为0.001842g/ml -量气管标尺读出的二氧化碳体积,单位为毫升mL); 温度、压力补正系数,采用不同封闭液时补正系数不同,见附录c(资料性附录)表c.1或表 C.2; -试料量,单位为克(g).
7 B.7.2当量气管读数是碳含量(例如,有的定碳仪把25mL体积刻成1.250%,有的把30mL体积刻成 1.500%)时,按式(B.2)计算二氧化碳的质量分数 20.AX ×100% B.2 w'eog m1 式中 量气管标尺读出的碳含量; 标尺读出的碳含量换算成二氧化碳体积的系数(即25/1.250)
20 11
GB/T3286.g一2014 附 录 资料性 温度、气压补 表c.1气体容量法测定二氧化碳量的温度、 P/100Pa 10 1 12 14 15 16 17 18 19 20 21 22 750 0.7740.7710.7680.7640.761l0.7570.7540.75o0.746l0.7430.739l0.7350.732]0.728l0.7240.72o0.7160.712 752 0.7770.7730.77o0.7660.7630.7590,.7560.752]0.7480,7450,7410.7370.7340.7300,726l0.7220.7180.714 754 0.779lo.775lo.772lo.768lo.765lo.761l0.7580.7540,.751o,.747o,.743o,74olo,.736lo.732o.728lo.724lo.72oo,716 756 o.781lo.777lo.774lo.77oo.767l0.7630.76o0.7560,753o,749o.,745o.,742o,738o,734o,730lo.726lo.722o,718 758 0.783l0.779lo.776l0.772l0.769l0.765l0.762l0.758 0.751l0.747lo.744l0.740l0.736l0.732lo.728lo.7240.720 760 0.785l0.781lo.7780.774l0.771l0.7670.7640.76o0.757l0.753l0.749l0.7460.742l0.738l0.734lo.73o0.7260.722 762 0.7870.784l0.78o0.777l0.773l0.7690.7660.762l0.759l0.7550.7510.7480.744l0.74ol0.7360.732l0.7280.724 764 0.789l0.7860.782]0.7790.7750.7710.7680.7640.761l0.7570.7530.7500.7460.7420.7380.7340.7300.726 0.7910.788l0.7840.781l0.7770.7740.77ol0.766l0.7630,7590.7550.752]0.7480.7440.74o0.7360.7320.728 766 768 0.7930.7900.786l0.783l0.7790.776l0.772l0.768l0.7650.7610.757 0.750l0.746l0.742 0.7340.730 770 0,.795o.792o.788l0,785lo.,781lo.778lo,7740,77ol0,7670,763lo,759lo,756lo,752lo.748lo,7440,74ol0,7360,732 772 o.797o,7940.79o0,787lo,783l0,78ol0.7760,772l0,769l0,7650.761o,758lo,754o.75ol0,746l0.742lo,7380,734 0.7670.7630.76o0.756l0.752l0.748 0.74o0.736 774lo0.80o0.796l0.792lo.789l0.7850.782l0.7780.774 776o.802lo,.7980,7950,7910.7870.784o,78o0,776o0.7730,769lo,765o,762lo.758o.7540.750o.746o.7420,738 778 0.804l0.800o0.7970.7930.7890.7860.7820.7780.7750.771l0.767l0.7640.76olo0.756l0.752l0.748l0.7440.740 780 0.773l0.7690.766l0.762l0.758l0.754l0.750 0.806j0.8020.7990.7950.7920.7880.7840.781 782 lo,7750.771lo.768 0.8080.8040.801l0.797 0.79ol0.786I0.783 l0.760l0.756 o.81olo.806lo.803lo.799o.796lo.792l0.7880.7850.781o,777o.773o.77olo.766lo.762o.758o.754lo.75oo.746 784 786 o.812lo.809lo,.805lo,.801lo.798o,7940,79o0,7870.,7830,7790.775o,7720,768o,764o,76olo,756lo,7520,748 788 0.814lo.811lo.807lo.803lo.80oo.7960.7920.7890.,7850,7810.,777o.7740.770l0.766l0.762lo.758o.7540.750 790 0.816l0.813l0.8090.8050.802l0.798l0.7940.791l0.787l0.7830.779l0.7760.772l0.768l0.764l0.76o0.7560.752 792 0.818l0.8150.8110.8080.804l0.80o0.7960.7930.789l0.785l0.7820.7780.7740.77ol0.766l0.762]0.7580.754 794 0.8200.8170.8130.81o0.8060.8020.7990.7950,791j0,7870.7830.7800.7760,772 72]0.7680.7640.76o0,756 796 0.758 lo.819lo.815so.812o.8osl 0.823 0.8040.8010.7970.7930.7890.7850.782l0.778l0.774l0.770l0.7660.762 798 0.825lo.82lo.817l0.814lo.81olo.806lo.8030.7990.795l0,.791lo0.788o.784l0.78olo.776lo.772lo.768l0.7640.76o 800 0.827lo.823lo.819o.816lo.812l0.808l0.8050.801l0.7970.793l0.790lo,786l0.782o.778l0.7740.77olo.7660.762 12
GB/3286.g一2014 附录 正系数表 气压补正系数表[本表用硫酸(1十1000)作封闭液 23 24 25 26 27 28 29 3031 32 33 34 3536 37 3839 40 41 42 10.7080.7040.70o0.6960.692l0.6870.6830.6780.6740.669l0.6640.6590.6540.6490.6440.6390.6330.6280.622l0.616 0.71o0.7060.7020.698o.6940.689o.6850.68o0.676j0,6710.6660.661]0.6560.651]0.6460.6400.6350.6290.6240.618 0.712o.708o.704o.70oo.695lo.691o.6870.682o.677lo.673o.668o.663o.658lo.653o.648o.6420.637o.631lo.626lo.620 0,7140.,71oo.706o.702lo.697o.693o.689o,684lo.679o.6750.67oo.665lo.66oo.6550.65o0.644lo639lo.6330.627o.622 0.716l0.712lo.708o.,7040.699o.695o.691l0.6860.681lo,677lo.672lo.667lo.6620.6570.651l0.646l0.64l0.635lo.629o.623 0.7180.714lo.71oo,706l0.701lo.6970.693l0,.6880683lo.678o.674o.669o.6640.6590.6530.648l0.6420.637o.631o.625 I0.7160.7120.708l0.7030.699l0.6940.69ol0.6850.68ol0.676o.6710.666o.66o0.6550.65o0.644l0.6390.6330.627 0.7180.7140.71o0.7050,701l0,6960,6920,6870,6820,6770,6720,6670.6620,6570.6520,6460,6410.6350,629 0,72o0,716o,711l0,7070,7030,6980,6940,689l0,6840,679o,674l0,G69lo.6640,6590,6540,6480,6420,6370,63 7260.722l0.718l0.713l0.709l0.705l0.700l0.696l0.691l0.6860.681 0.671l0.666l0.661l0.6550.650l0.644l0.6380,633 0.728l0.724lo.72oo.7150.711lo.7070.702o.697l0.693o.688l0.683o.678lo.673o.668o.6630.657o.652l0.646lo.64oo.634 0,73o0,726lo,722lo,7170.713o,7080704l0,6990.695o,69oo,685o.68oo,.6750.6700.6650.659l0,6540,648lo,642o,636 0,7320,728o.724o.719o.7150.,71oo.706lo.7010.697o.6920.687lo.682lo.6770.6720,.6660.6610.655o.65o0,.64o.638 I0.73oo.725l0o.721l0.7170.7120.708l0.7030.6980.6940.689lo.684o.679l0.6740.6680.6630.6570.6520.646lo.640 l0.7230.7190.7140.71o0.7050.700o0.696l0.691lo.6860,681l0.676l0.6700.6650,659l0.6540.6480.642 .7380.7340.7290.7250.7210.7160.7120.7070.7020.6980.6930.6880.6830.6780.672]0.6670.6610.6550.65ol0.646 0.722l0.718l0.714l0.709l0.7040,699l0.695 0.679l0.6740.668l0.663l0.6570.651l0.645 .742lo.738lo.733o.729o.725lo.72olo,716lo.7110.706o.701lo.696o.691o.686o.681lo.676o.67o0,.665o.659o.65so.647 0.739o,735o.731lo.726lo,722o,7170.713o,708lo,703o,698o.693o,688lo.683o.6780.6720,667lo,.661lo.6550,.649 0,7460.741o.737o.733o.7280.724o.719o.715l0.71olo,7050.70oo.695lo.69o0.6850.68o0.674o.669lo.6630.657o.651 .7480,7430.739o,7350.73olo,726l0.721l0,7170,712lo,7070.702l0.697lo,6920.687l0.6810.676l0,6700,665lo,6590.653 I0,737l0.732]0.7280.7230,7190,7140.7090.7040.6990,694l0.6890,6830,6780,6720,6670.6610,655 0,7470,7430,7390,7340,7300,7250,7200,7160,71l0,7060,7010,6960,6910,6850,6800,6740,6680,6630,657 I0.7490.745l0.7410.7360.732]0.7270.7220.7180,7130.7080.7030.6980.6920.6870.6820.6760.67o0.6640.658 0.7550.751lo.7470.743o.738lo.734lo,729l0,.7240,72olo,715o.71olo.705lo.70olo0.694l0.689l0.683l0.678l0.672lo.666o.66o I0.757l0.753l0.749lo.7440.74olo.7350.731l0.7260.721l0.717l0.7120.707o.701o.696l0.6910.685l0.68o0.6740.668l0.662 13
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GB/T3286.g一2014 表c. 10 15 18 20 2 P/100P 12 13 16 19 22 1032 1.0691.0651.0601.0561.0511.0461.0421.0371,0331.0281.0241.0191.0141,0091,0051.0000.9950.990 10341.0711.0671.0621.0581.0531.0491.044l1.0391.0351.03o1.0261.021l1.0161.0111.0071.002lo.9970.992 10361.0731.0691.0641.06ol1.0551.051l1.0461.0411.0371.0321.0281.0231.0181.0131.0091.004o.9990,.994 10381.0751.0711.0661.0621.0571.0531.0481.041.0391.034.03o.0251.02o1.0151.0111.0061.0o1l0,.996 10401.0771.0731.0681.0641.0591.0551.05o1.0461.0411.0361.0321.0271.0221.0171.0131.0081.0030.998 表c.2气体容量法测定二氧化碳量的温度 !/ P/100Pa 10 1 12 13 1415 l6 1819 20 21 22 750 0.7730.77o0.7670.7630.76o0.7570.7530.75o0.7470.7430.740l0.737l0.733o0.730lo.726l0.723l0.7190.716 752 0.7750.7720.7690.7650.7620.7590.7560.752]0.7490.7450.742]0.7390.7350.7320.7280.7250.7210.717 754 0.777l0.774l0.7710.768l0.764 I0.758l0.7540.751 l0.737l0.7340.7300.727l0.7230.719 756 o.779lo.776lo.773lo.77oo.7660.7630.76o0,756lo,753o,749o,746lo,743o,739lo,736lo,732lo.729lo.725o,721 758 0.782lo.778o.7750,772o,768o,765o,7620,758o,755o,751o,748lo.745lo,7410.738o.734o.731lo.7270.723 760 0.784l0.78olo.7770.774l0.77ol0.7670.7640.76o0.757l0.754l0.75ol0.747l0.743l0.74olo.736lo.7330.7290.725 762o.786l0.782]0.779lo.776lo,772l0.7690,766l0,762l0,7590,7560.752l0.749lo,745l0,742l0,7380,735lo.731l0,727 764 0.788l0.784l0.7810.7780.774l0.7710.7680.7640.761l0.758l0.7540.7510.7470.744l0.74ol0.7370.7330.729 766 0.7900.7860.7830.78o0.7760.7730.77o0.7660.7630.76ol0.7560.7530.749l0.746l0.7420.7390.7350.73 0.792lo.788lo.785lo.782lo.779o.775l0.7720.7680.7650.7620.758o.755 768 0.7370.733 770 o.794lo.791lo.787l0.784lo.781lo.777lo,774l0.771 0.7640.760l0.7570.7530.750l0.746 0.7390.735 772 0.796lo.793lo.7890.786l0.783l0.779l0.7760.773l0.769l0.766l0.762l0.7590.755l0.752l0.748lo.7440.741l0.737 774 0,798lo.795lo.7910.7880.785l0.781l0.778lo0.7750.771l0,768l0.7640.7610.757l0.754lo.75olo.7460.7430.739 776 0.80oo.797lo.7930.79o0.7870.7830.78o0.777 lo.7700.766o.763o,759o,756lo.,7520.748o.7450.74l 778o.802lo.7990.7960.7920.789l0.7850.7820.779lo.775o.772lo.768lo.765lo.761l0.7580.754o.75oo.7470.743 780 0.805l0.801l0.7980.7940.7910.7880.7840.781 0.7740.77o0.7670.7630.76o0.756l0.7520.7490.745 782 0.807l0.803l0.800l0.7960.793l0.790l0.786l0.783l0.7790.7760.772l0.769l0.765l0.762l0.7580.754l0.751 784 0.809lo.805lo.802lo.798l0.795l0.792lo.788o.7850.781l0.778l0.774o.771o,767l0.764lo.76olo.7560.7530.749 0.811lo.807lo.804lo.80oo.797lo.794lo.79oo.787l0.783l0.78o0.7760.773o.769lo.765o.762o.758o.7550.751 786 788o.813o.8090.806lo.8020.,7990,796o,7920.789o.7850.7820.778o.775lo.7710.767lo.764o.76oo.7570.753 22
GB/3286.g一2014 续 27 37 23 25 26 29 30 33 34 3 36 38 39 40 42 28 31 32 0.9850.980l0.975l0.970.965l0.959l0.9540.949l0.943l0.938l0.932l0.926l0.920l0.914l0.9080.902l0.896l0.889l0.883l0.876 0.987l0.982lo.977o.9720.967lo.961o.956lo.95o0.945o.939o.934o.928lo.9220.916l0.91ol0.904l0.8980.891lo.8840.878 l0.9890.984lo.979o.974o.968o.963o.958lo.9520.9470.941lo.936lo.93oo.924o.918lo.912lo.9060.8990.893o.886lo.880 l0.991o.986lo.981lo.9760.97oo.965lo.96oo.9540.949o.943lo.938lo.9320.926o.92oo.914o.9080.9010.895o.888lo.882 l0.993o.988lo.9830.9780.972lo.967lo.9620.9560.951o.945lo.939lo.9340.9280.922lo.916l0.9090.9030.897lo.89oo.883 气压补正系数表(本表用氧化钠酸性溶液作封闭液 23 24 25 26 27 2829 30 31 32 33 34 35 36 37 38 39 40 41 42 l0.712l0.7080.7050.7010.697o.693o.689l0.6850.6810.677lo.673lo.669l0.6650.66o0.656l0.651l0.6470.642l0.637l0.631 0,7140.71ol0,7060,7030.6990,6950,691j0,6870,6830,6790,6750,6710.6670.662]0.6580,6530,6490.6430,6380,633 0.716l0.7120.7080.705l0.701l0.6970.693l0.6890.685l0.681l0.6770.673l0.668l0.6640.660l0.655l0.651l0.645l0.64ol0.635 0.718lo.714o.71oo.707lo.703o.699o.6950.691o.687l.683o.679o.674o.67oo.666lo.662o.6570.652o.647lo.642o.637 0,72o0,716o.712lo.709lo,7050,701o.697lo,693lo.689o,6850,.68oo,676lo.672o.6680.6630,659o,654lo.6490,64o,639 0,7220,718lo.714o,71ol0.707lo,7030,699l0,6950.691lo,687lo,682lo.678lo,.6740.6700.6650.661l0,656l0.651lo,6460.,640 0,7240,72olo.716o.7120.708o.7050,701l0,6970.693o,6890.684lo.68oo.676l0.67l0,6670.6630.6580.653o.6480.642 0.7260.722l0.7180.7140.71ol0.7070.702l0.6990.6950,69o0.686l0.682lo.6780.6730.6690,6640,6600.6550.6490.644 0,7280.7240,72o0,7160.712]0,7080.7040,7000,6970,692]0,6880,6840,.6800.6750,6710,6660,662]0,6560,6510,646 7300.726l0.722l0.7180.714l0.7100.706l0.702l0.6980.694l0.6900.686l0.682l0.6770.673l0.6680.663l0.658l0.653l0.648 0.683lo.679lo.675l0.67oo.665l0.66olo.655lo.65o 0.7310.728l0.7240.720l0.716l0.7120.708l0.704l0.7000.696l0.692 0.7330.73olo.726o.,7220.718lo.7140,71ol0.7060.702lo.698o.694o.689lo.6850.681l0.6770.672l0.667l0.662lo.657o.651 0,7350,732lo,728o,7240.72oo,716l0,712l0,7080,704lo,70oo,696lo.691lo,6870.6830,6780,574l0,6690,664lo,659o,653 l0.734o.73oo.726lo.7220.718o.714o.71oo.7060.7020.697lo.693o.689lo.6850.68oo.576lo.671lo.6660.66oo.655 0.7390.736o.732l0.728lo0.7240.72oo.716l0.712l0.,708l0.7040.699o.695lo.6910.6870.6820.678o,673o.6670.662o.657 0.7370.7340.7300.7260.722l0.7180.7140.71o0.706l0.701l0.6970.6930.6880.6840.6790.6750.669lo.6640.659 0,7430,7390,7360,7320,728I0,7240,720l0,7160,7120,7080,7030,6990,6950,6900,6860,6810,6760,6710,6660,661 0.7450.741lo.7380.734lo.7300.726lo.722l0.718lo.714l0.7090.705lo.701o.697o.6920.688o.683l0.678o.673l0.6680.662 0,7470.,743lo.739o.736lo.732o.,7280.724o.72olo,716lo,7110.707o.703lo.698o.6940.6900.685lo,68olo.6750.67oo.664 l0.7490.745l0.741o.7380.734o.73oo.7250.7210.7170.713lo.709lo.7050.70oo.696l0.691lo.6870.6820.677o.672lo.666 23
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GB/3286.g?2014 25 26 27 29 30 31 32 33 35 36 37 28 34 38 39 40 42 0.7470.7430.740o0.7350.732l0.7270.7230.7190.715l0.7110.706l0.702l0.6980.6930.689l0.6840.6790.673|0.668 0,7530.7490.7450,7410.7370.7330.7290,7250.7210,7170.7130.708l0,7040.7000,6950,6910,6860,68o0,6750.670 I0.743l0.739l0.735l0.731l0.7270.723l0.719l0.7140.710l0.706l0.7020.697l0.692l0.688 l0.6820.677l0.672 lo.708lo.703o.699o.6940.689o.684lo.679o.674 0.7530.749l0.7450.741l0.7370.733i0.729l0.7250.721 0.759l0.7550.751 l0.743l0.,739l0,735l0,7310,727o.723o,718lo.714lo.,71ol0,70s0.701l0.696lo,6910.686lo,681o.675 0,7610,757o,753o,7490.745o,7410,737l0,7330,729lo,725o,72olo.716lo,7120.7070.7030.698l0,6930.688lo,683o,677 0,7630,759lo.755lo,.751 I0.726l0.722l0.7180.713o.7090.705l0.70o0.695l0.690o0.684lo.679 ,7650.761o.757lo.753o.749l0.7450.741l0.737lo.7330.7280.7240.72oo.7150.71ll0.7060.702lo.697lo.691l0.6860.681 l0.7630.759l0.7550.7510.7470.7430.7390.7350.7300.7260.721l0.7170.7130.7080.7040.6990.6930.688lo.683 0.769l0.765l0.761 70.7530.7490,7450,7410,7360,7320.7280.7230.7190.7150,71o0,7050.7010,6950.690l0,685 0.7670.7630.759l0.755l0.751 0.742l0.738l0.7340.7300.725l0.721 0,697l0.692l0.686 0.772l0.769lo.765o.,7610.757lo.7530,748l0.7440.74olo.736o.731lo.727lo.7230.718l0.7140,709l0.704o.699lo.694o.688 0,7740,77oo.767lo.763lo.7590,7550.75o0.746lo.742lo,7380.733o.729lo.7250.72o0.,7160.711lo.706lo.7010.695o.690 0,7760.772o.769o.765lo.7610.757o.752lo.7480o.744o.,74o0.735o.731lo.7270.7220.,7180.713l0,708o.7030.697o.692 0,7780,774lo,771lo.7670.762lo,758l0,754l0,75o0.746lo,742l0,737l0.733o.729l0.724 I0,7150,71o0,704lo.6990.694 0.78o0.776l0.772l0.7690.7640.76o0.7560.752]0.7480.7440.7390.735l0.73o0.726l0.721 10.712l0.706l0.701l0.696 0,782]0,7780,7740,7700,7660,7620,7580,7540,75o0,7450,7410,737l0,7320,7280,7230,7180,7140,7080,7030,697 0.784lo.78oo.776o.772lo.768lo.764lo.76o0.756o.752lo.747o.743o.738o.734lo.730o.7250.72o0.715lo.71oo.705o.699 0.7860.782o.778lo.774lo.77o0.766o.762lo.758lo.754o.7490.745lo.74oo.736o.7310.727o.722l0.717o.7120.707o.701 0.7880.784lo.78oo.,776l0.772lo.768l0,764l0.76o0.756l0.751 0.742lo.7380.733l0.7290.7240.719 l0.7080.703 0.7900.786l0.782lo.7780.774l0.77o0.766l0.762l0.757l0.753l0.748l0.744lo.74o0.735l0.731 0.792l0.788l0.784l0.78o0.776l0.7720.7680.7630.759l0.755l0.75ol0.746l0.7420.737l0.7320.7280.723 0.794l0.79ol0.786l0.782l0.778l0.774l0.770l0.7650.761l0.7570.752l0.748lo.744l0.739l0.734l0.730l0.725l0.719l0.714l0.708 0.796l0.792l0.7880.784l0.7800.776l0.771l0.7670.763l0.759l0.754l0.750l0.745l0.74l0.736l0.731l0.7270.721 0.798l0.794l0.790l0.7860.782l0.778l0.7730.769l0.7650.761 0.752 0.733l0.728l0.723l0.718 0.8000,796lo.792lo.,7880.784lo.,78ol0,775lo,7710,767o.763o,758lo.753lo.,7490,7450.74ol0,7350,73olo,725lo.719o.71 I0.802l0.798l0.794lo.79o0.786lo.7810.7770.7730.769l0.764l0.76o0.755lo.7510.746l0.7420.7370.732l0.7270.721l0.716 l0.804o.80oo.796lo.7920.788o.783lo.779o.7750.7710.766lo.762lo.7570.7530.748o.744o.7390.7340.728o.723lo.718 25
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石灰石及白云石化学分析方法第9部分：二氧化碳含量的测定烧碱石棉吸收重量法GB/T3286.9-2014
石灰石及白云石是广泛应用于建筑、冶金、化工等领域的常见矿物，其质量受到二氧化碳含量的影响。为了保证产品质量，需要对其进行化学分析以测定二氧化碳含量。
本文主要介绍石灰石及白云石化学分析方法第9部分：二氧化碳含量的测定烧碱石棉吸收重量法GB/T3286.9-2014。该标准采用烧碱石棉吸收法，通过吸收样品中的二氧化碳来测定其含量。以下是该方法的主要步骤：
1. 取约2g左右的样品，放入预先称重的烧杯中。
2. 在另一个烧杯中加入10mL蒸馏水和2.5g氢氧化钠，搅拌至氢氧化钠溶解。
3. 将上述溶液倒入装置中，加入1片烧碱石棉，将其点燃，并连续吸入各自用途的管子内，以去除其中的二氧化碳。
4. 关闭进气阀门，将烧杯中的样品所在的支管插入反应室内的三通口，并打开出气阀门，使反应室内形成负压。
5. 打开进气阀门，使样品与烧碱石棉进行接触吸收，保持恒定时间，然后关闭进气阀门。
6. 将反应室内残余的碱液滴入另一烧杯中，加入几滴酚酞指示剂，用0.5mol/L盐酸滴定至粉红色消失。
7. 计算样品中的二氧化碳含量。
通过该方法可以测定石灰石及白云石中的二氧化碳含量，为保障产品质量提供了有效手段。在实际操作中，需要按照标准要求进行严格操作，以确保测试结果的准确性和可靠性。
总之，石灰石及白云石化学分析方法第9部分：二氧化碳含量的测定烧碱石棉吸收重量法GB/T3286.9-2014是一种简单、准确、可靠的化学分析方法，对于石灰石及白云石的生产和检验具有重要意义。
