工作场所空气中三氧化硫和硫酸的氯化钡比浊法的改进
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摘要
目的对工作场所空气中三氧化硫和硫酸的氯化钡比浊法进行改进和评价。方法基于氯化钡比浊法,采用0.1%聚乙二醇辛基苯基醚(Triton X-100)溶液作稳定剂,改变硫酸钡悬浮体系的稳定性,分别进行标准曲线线性、测定准确度和精密度试验,筛选出最合适的稳定剂。结果该方法标准曲线相关系数可达0.999 7,检出限为1μg/ml,加标回收率为94.9%~99.8%,批内精密度为1.6%。结论改进后的方法具有简便快速、高效、准确等优点,线性、检出限、准确度、精密度等性能指标均满足标准研制指南的要求,适用于工作场所空气中三氧化硫和硫酸的测定。
Objective To improve and evaluate the barium chloride turbidimetric method for the detection of sulfur trioxide and sulfuric acid in workplace air. Methods Based on barium chloride turbidimetry,0. 1% Triton X-100 solution was used as stabilizer,the stability of barium sulfate suspension system was changed. The tests for standard curve linearity,determination accuracy and precision were conducted respectively. Finally the most suitable stabilizer was filtered out. Results The standard curve correlation coefficient of this method can reach 0. 999 7,the detection limit was 1 μg/ml. The spike recovery was within94. 9%-99. 8%,and the intra-batch precision was 1. 6%. Conclusion The improved method is simple,rapid,efficient and accurate. The performance indexes such as linearity,detection limit,accuracy,precision can meet the requirements of standard development guide. It is suitable for the determination of sulfur trioxide and sulfuric acid in workplace air.
Objective To improve and evaluate the barium chloride turbidimetric method for the detection of sulfur trioxide and sulfuric acid in workplace air. Methods Based on barium chloride turbidimetry,0. 1% Triton X-100 solution was used as stabilizer,the stability of barium sulfate suspension system was changed. The tests for standard curve linearity,determination accuracy and precision were conducted respectively. Finally the most suitable stabilizer was filtered out. Results The standard curve correlation coefficient of this method can reach 0. 999 7,the detection limit was 1 μg/ml. The spike recovery was within94. 9%-99. 8%,and the intra-batch precision was 1. 6%. Conclusion The improved method is simple,rapid,efficient and accurate. The performance indexes such as linearity,detection limit,accuracy,precision can meet the requirements of standard development guide. It is suitable for the determination of sulfur trioxide and sulfuric acid in workplace air.
引文
[1]中华人民共和国卫生部.GBZ/T 160.33—2004工作场所空气有毒物质测定硫化物[S].北京:人民卫生出版社,2006.
[2]刘波.硫酸盐的检测方法[J].职业与健康,2007,23(19):1745-1747.
[3]王勇,陈子良,宋凯,等.饮用水中硫酸盐的氯化钡比浊法的改进[J].中国卫生检验杂志,2010,20(7):1811-1812.
[4]中华人民共和国卫生部.GBZ/T 210.4—2008职业卫生标准制定指南:工作场所空气中化学物质测定方法[S].北京:人民卫生出版社,2009.
[5]李薇.检测硫酸的氯化钡比浊法的探讨[J].中国卫生检验杂志,2010,20(2):445-446.
[6]冷琳,李明.作业场所空气中硫酸雾测定的两种方法比较[J].工业卫生与职业病,2007,33(6):367-369.
[7]范建中,倪松华.白皂素体系氯化钡比浊法测定车间空气中硫酸雾[J].海峡预防医学杂志,2003,9(2):41-42.
[8]宋金如,刘淑娟,朱霞萍.测定水中硫酸根方法的概述[J].华东地质学院学报,2002,25(2):64-68.
[9]范建中,杨元斌.白皂素乳化-氯化钡比浊法测定饮水中硫酸盐的应用[J].中国卫生检验杂志,2002,12(1):22-74.
[10]刘献英.车间空气中硫酸雾的测定方法[J].职业与健康,2003,19(11):58-59.
[11]张鲜桃,张海燕,宋彩军.离子色谱仪测定车间空气中硫酸和三氧化硫方法的研究[J].中国卫生检验杂志,2012,22(6):1257-1258.
[12]俞幸幸,张茵,方辰,等.氯化钡比浊法测定工作场所空气中硫酸含量的方法改进[J].上海预防医学,2013,25(5):282-283.
[13]姬红梅.职业卫生中硫酸雾测定影响因素的探讨[J].四川冶金,2015,37(5):54-78.
[14]梁运献.硫酸钡比浊法测定土壤全硫的改进[J].广西农业科学,2002(4):186-187.
[15]王孝镕.硫酸钡比浊法测定煤矿矿井水中的硫酸盐[J].煤矿环境保护,1996,11(3):61-62.
[16]王丽,邢方潇,钱乐,等.饮用水中硫酸盐的新型全自动比浊快速测定法[J].环境与健康杂志,2015,32(4):348-351.
[2]刘波.硫酸盐的检测方法[J].职业与健康,2007,23(19):1745-1747.
[3]王勇,陈子良,宋凯,等.饮用水中硫酸盐的氯化钡比浊法的改进[J].中国卫生检验杂志,2010,20(7):1811-1812.
[4]中华人民共和国卫生部.GBZ/T 210.4—2008职业卫生标准制定指南:工作场所空气中化学物质测定方法[S].北京:人民卫生出版社,2009.
[5]李薇.检测硫酸的氯化钡比浊法的探讨[J].中国卫生检验杂志,2010,20(2):445-446.
[6]冷琳,李明.作业场所空气中硫酸雾测定的两种方法比较[J].工业卫生与职业病,2007,33(6):367-369.
[7]范建中,倪松华.白皂素体系氯化钡比浊法测定车间空气中硫酸雾[J].海峡预防医学杂志,2003,9(2):41-42.
[8]宋金如,刘淑娟,朱霞萍.测定水中硫酸根方法的概述[J].华东地质学院学报,2002,25(2):64-68.
[9]范建中,杨元斌.白皂素乳化-氯化钡比浊法测定饮水中硫酸盐的应用[J].中国卫生检验杂志,2002,12(1):22-74.
[10]刘献英.车间空气中硫酸雾的测定方法[J].职业与健康,2003,19(11):58-59.
[11]张鲜桃,张海燕,宋彩军.离子色谱仪测定车间空气中硫酸和三氧化硫方法的研究[J].中国卫生检验杂志,2012,22(6):1257-1258.
[12]俞幸幸,张茵,方辰,等.氯化钡比浊法测定工作场所空气中硫酸含量的方法改进[J].上海预防医学,2013,25(5):282-283.
[13]姬红梅.职业卫生中硫酸雾测定影响因素的探讨[J].四川冶金,2015,37(5):54-78.
[14]梁运献.硫酸钡比浊法测定土壤全硫的改进[J].广西农业科学,2002(4):186-187.
[15]王孝镕.硫酸钡比浊法测定煤矿矿井水中的硫酸盐[J].煤矿环境保护,1996,11(3):61-62.
[16]王丽,邢方潇,钱乐,等.饮用水中硫酸盐的新型全自动比浊快速测定法[J].环境与健康杂志,2015,32(4):348-351.