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| 环境水体中亚硫酸盐分析方法研究 | |
| 引用本文： | 龚正君,肖新峰,张新申.环境水体中亚硫酸盐分析方法研究[J].环境科学与技术,2010,33(1). |
| 作者姓名： | 龚正君 肖新峰 张新申 |
| 作者单位： | 1. 西南交通大学环境科学与工程学院,四川,成都,610031 2. 山东科技大学化学与环境工程学院,山东,青岛,266510 3. 四川大学皮革化学与工程教育部重点实验室,四川,成都,610065 |
| 基金项目： | 西南交通大学科学研究基金资助(2007B17);;西南交通大学青年教师科研起步项目基金资助(2007Q041);;国家十五863课题研究基金资助(2002AA639290) |
| 摘 要： | 研究发现,溴酸钠能够与劳氏紫发生褪色反应,而亚硫酸盐对此反应有催化作用,从而建立起测定亚硫酸盐的新方法。在上述最优实验条件下,SO32-浓度C介于5×10-8～2.5×10-6g/mL和2.5×10-6～1×10-4g/mL范围内与吸光强度(mV)呈良好的线性关系。该方法的检出限为1.7×10-8gm/L。对浓度为5×10-7g/mL和1×10-5g/mL的SO32-进行11次连续测定,计算得出相对标准偏差(RSD)分别为2.1%和3.3%。应用文章建立的新方法对河水水样中的SO32-进行分析,回收率在96.4%～104.8%,结果令人满意。 |
| 关 键 词： | 流动注射 光度分析法 亚硫酸盐 环境水体 |
Determination of Sulphite in Environmental Waters |
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| GONG Zheng-jun,XIAO Xin-feng,ZHANG Xin-shen.Determination of Sulphite in Environmental Waters[J].Environmental Science and Technology,2010,33(1). | |
| Authors: | GONG Zheng-jun XIAO Xin-feng ZHANG Xin-shen |
| Institution: | 1.School of Environmental Science and Engineering;Southwest Jiaotong University;Chengdu 610031;China;2.School of Chemistry and Environment Engineering;Shandong University of Science and Technology;Qingdao 266510;3.Key Laboratory of Leather Chemistry and Engineering of Ministry of Education;Sichuan University;Chengdu 610065;China |
| Abstract: | A kinetic method for the determination of sulphite based on catalytic effect on the reaction between sodium bromate and thionine in strongly acidic media was proposed. Under the optimal conditions, response to sulphite concentration was linear in the range of 5×10~(-8)～2.5×10~(-6)g/mL and 2.5×10~(-6)～1×10~(-4)g/mL, with the correlation coefficients of 0.995 and 0.997 respectively and detection limit of 1.7×10~(-8)g/mL. The relative standard deviation was 2.1% for 5×10~(-7)g/mL sulphite and 3.3% for 1×10~(-5)g/mL sulphite. The proposed method was applied to the determination, of sulphite in river water successfully, with recovery between 96.4% and 104.8%. |
| Keywords: | flow injection photometric analysis sulphite environmental waters |
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