[The use of ion chromatography for the determination of volatile inorganic acids in workplace air].

IF 1 4区医学 Q4 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH

Medycyna pracy Pub Date : 2022-09-05 Epub Date: 2022-07-22 DOI:10.13075/mp.5893.01226

Joanna Kowalska, Małgorzata Szewczyńska

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引用次数: 1

Abstract

Background: The presence of inorganic acids in the air poses a threat to the health of workers. Volatile inorganic acids, e.g., hydrochloric acid, hydrobromic acid and nitric acid, may cause respiratory, eye and skin irritation. The presented method uses ion chromatography to determine the concentrations of hydrochloric, hydrobromic and nitric acids in air samples.

Material and methods: The method is based on the collection of airborne volatile acids on impregnated quartz fiber filter, extraction of acids with deionized water, and analysis by ion chromatography with conductivity suppression. The separation was performed on the Dionex IonPac™ AS22 (4 × 250 mm) column for trace anion analysis. The carbonate/bicarbonate eluent was maintained at an isocratic flow rate of 1.2 ml/min. The calibration standard solutions have been covering the range of 0.2-5 mg/l of chloride, bromide and nitrate.

Results: The specified chromatographic conditions enable selective measurement of chloride, bromide and nitrate anions. The obtained mass concentration of each anion, having factored in the sample dilution, the conversion factor (to convert anion concentration to acid) and the volume of the air sample, allows the calculation of acid concentrations in the analyzed air.

Conclusions: This method makes it possible to determine the concentration of hydrochloric acid, hydrobromic acid and nitric acid in the workplace air within the concentration range corresponding to 0.1-2 times the exposure limit value in Poland. The method meets the criteria for the performance of procedures for the measurement of chemical agents, listed in PN-EN 482. This article discusses the problems of occupational safety and health, which are covered by health sciences and environmental engineering. Med Pr. 2022;73(4):337-47.

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离子色谱法测定工作场所空气中挥发性无机酸的方法

背景:空气中无机酸的存在对工人的健康构成威胁。挥发性无机酸，如盐酸、氢溴酸和硝酸，可能引起呼吸、眼睛和皮肤刺激。本方法采用离子色谱法测定空气样品中盐酸、氢溴酸和硝酸的浓度。材料与方法:该方法采用浸渍石英纤维过滤器收集空气中挥发性酸，去离子水提取酸，电导率抑制离子色谱法分析。分离采用Dionex IonPac™AS22 (4 × 250 mm)色谱柱进行痕量阴离子分析。碳酸盐/碳酸氢盐洗脱液保持等压流速1.2 ml/min。校准标准溶液的浓度范围为0.2-5 mg/l氯化物、溴化物和硝酸盐。结果:在规定的色谱条件下，可以选择性地测定氯化物、溴化物和硝酸盐阴离子。得到的每个阴离子的质量浓度，在考虑了样品稀释度、转换因子(将阴离子浓度转换为酸)和空气样品的体积后，可以计算分析空气中的酸浓度。结论:该方法可在波兰工作场所空气中盐酸、氢溴酸和硝酸浓度对应的0.1 ~ 2倍暴露限值范围内进行测定。该方法符合PN-EN 482中列出的化学试剂测量程序的性能标准。本文讨论了健康科学和环境工程涉及的职业安全与健康问题。中国生物医学工程学报，2010;33(4):337- 347。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Medycyna pracy PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-

CiteScore

1.90

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal publishes original papers, review papers and case studies in Polish and English. The subject matter of the articles includes occupational pathology, physical, chemical and biological agents at workplace, toxicology, mutagenesis, health policy, health management, health care, epidemiology, etc. The magazine also includes reports from national and international scientific conferences on occupational medicine. It also contains letters to the editor. Each first-in-year issue of the magazine comprises former-year indices of authors and keywords.