离子色谱法同时测定工作场所空气中8种酸性物质
发布时间：2018-12-21 21:04
【摘要】：目的建立了同时测定工作场所空气中八种酸性物质(HF、HCl、HNO2、HBr、HNO3、H3PO4、H2SO4、HOOC-COOH)含量的离子色谱法。方法工作场所空气中酸性物质经Na2CO3-Na HCO3吸收液采集后,经Metrosep A Supp 4-250/4.0阴离子分析柱分离,以电导检测器检测,采用外标法进行定量分析。结果 F-、Cl-、NO2-、Br-、NO3-、PO43-、SO42-、-OOC-COO-的检出限依次为0.021μg/ml、0.055μg/ml、0.368μg/ml、0.310μg/ml、0.132μg/ml、0.425μg/ml、0.216μg/ml、0.507μg/ml(S/N=3),且在相应浓度范围内线性关系良好(相关系数r均大于0.999)。相对标准偏差(RSD)值为1.1%~4.6%,加标回收率为95.4%~102.3%,采样效率均大于97%,样品在室温状态下可保存3 d。结论该方法准确性好,灵敏度高,且简便快速,可同时测定工作场所空气中多种酸性物质。
[Abstract]:Objective to establish an ion chromatography method for simultaneous determination of eight acidic substances (HF,HCl,HNO2,HBr,HNO3,H3PO4,H2SO4,HOOC-COOH) in workplace air. Methods the acidic substances in the workplace air were collected by Na2CO3-Na HCO3 absorbent and separated by Metrosep A Supp 4-250% 4.0 anion analysis column, detected by conductance detector and quantitatively analyzed by external standard method. Results the detection limit of F-Cl-No _ 2-O _ 3-O _ 43-OOC-COO- was 0.021 渭 g / ml, 0.055 渭 g / ml, 0.368 渭 g / ml / ml, 0.310 渭 g / ml / ml, 0.132 渭 g / ml / ml, 0.425 渭 g / ml / ml, 0.216 渭 g / ml / ml, respectively. 0.507 渭 g/ml (S/N=3), and the linear relationship was good in the corresponding concentration range (r > 0.999). The relative standard deviation (RSD) is 1.1 and 4.6, the recovery rate is 95.4 and 102.3, the sampling efficiency is more than 97, and the sample can be preserved for 3 days at room temperature. Conclusion the method is accurate, sensitive, simple and rapid, and can be used for simultaneous determination of many acidic substances in workplace air.
【作者单位】： 山东安和安全技术研究院有限公司;滨州市安全科学技术服务中心;
【基金】：安全生产重大事故防治关键技术科技项目(shandong-096-2013AQ) 滨州市科技发展计划项目(2013GG0902)
【分类号】：R134.4
本文编号：2389462
[Abstract]:Objective to establish an ion chromatography method for simultaneous determination of eight acidic substances (HF,HCl,HNO2,HBr,HNO3,H3PO4,H2SO4,HOOC-COOH) in workplace air. Methods the acidic substances in the workplace air were collected by Na2CO3-Na HCO3 absorbent and separated by Metrosep A Supp 4-250% 4.0 anion analysis column, detected by conductance detector and quantitatively analyzed by external standard method. Results the detection limit of F-Cl-No _ 2-O _ 3-O _ 43-OOC-COO- was 0.021 渭 g / ml, 0.055 渭 g / ml, 0.368 渭 g / ml / ml, 0.310 渭 g / ml / ml, 0.132 渭 g / ml / ml, 0.425 渭 g / ml / ml, 0.216 渭 g / ml / ml, respectively. 0.507 渭 g/ml (S/N=3), and the linear relationship was good in the corresponding concentration range (r > 0.999). The relative standard deviation (RSD) is 1.1 and 4.6, the recovery rate is 95.4 and 102.3, the sampling efficiency is more than 97, and the sample can be preserved for 3 days at room temperature. Conclusion the method is accurate, sensitive, simple and rapid, and can be used for simultaneous determination of many acidic substances in workplace air.
【作者单位】： 山东安和安全技术研究院有限公司;滨州市安全科学技术服务中心;
【基金】：安全生产重大事故防治关键技术科技项目(shandong-096-2013AQ) 滨州市科技发展计划项目(2013GG0902)
【分类号】：R134.4
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