过硫酸钠氧化-流动注射化学发光法在地下水腐植酸含量测定中的应用

杨胜科; 崔文夏; 赵钺; 陈静; 刘凯; 李斌

过硫酸钠氧化-流动注射化学发光法在地下水腐植酸含量测定中的应用

1.
长安大学环境科学与工程学院, 陕西西安 710054

2.
宁夏地质矿产勘查开发局水文地质工程地质环境地质勘查院, 宁夏银川 750021

3.
长安大学环境科学与工程学院, 陕西西安 710054

4.
长安大学环境科学与工程学院, 陕西西安 710054

5.
长安大学环境科学与工程学院, 陕西西安 710054

6.
长安大学环境科学与工程学院, 陕西西安 710054

基金项目:
国家自然科学基金项目(41072185)

收稿日期: 2012-02-29

刊出日期: 2012-08-28

Determination of Humic Acid in Groundwater by the Sodium Persulfate Oxidization Flow-Injection Chemiluminescence Method

1.
School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China

2.
Hydrological Geology & Environment Geology Division, Exploration & Development Bureau of Geology & Mineral Resources of Ningxia, Yinchuan 750021, China

3.
School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China

4.
School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China

5.
School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China

6.
School of Environmental Science and Engineering, Chang'an University, Xi'an 710054, China

Received Date: 29 February 2012

Publish Date: 28 August 2012

摘要

摘要: 在碱性条件下过硫酸钠能氧化腐植酸发生化学发光反应。本研究以过硫酸钠-腐植酸化学发光体系为基础,建立了腐植酸的过硫酸钠氧化-流动注射化学发光测定方法,同时对测定方法的负高压及增益、泵速、过硫酸钠浓度、氢氧化钠浓度等影响因素进行了优化实验。方法的线性范围为0.1~500 mg/L(相关系数为0.9985),检出限为0.076 mg/L,对浓度为0.5 mg/L的腐植酸进行11次平行测定,相对标准偏差(RSD)为3.47%。利用该方法对5种不同地区地下水中的腐植酸进行测定,样品的加标回收率在98.33%~107.50%之间。该方法无需分离,简单易行,对实际样品测定结果满意。
- 流动注射 /
- 化学发光法 /
- 地下水 /
- 腐植酸 /
- 过硫酸钠
Abstract: Based on systematic studies, sodium persulfate has a photochemical reaction to oxidize humic acid under alkaline conditions. The photochemical dynamic curve of Na2S2O8-humic acid system has been established. The reaction conditions were optimized for negative high voltage, gain, pump speed, Na2S2O8 and NaOH concentration. A new photochemical analysis method to determine humic acid in loess has been established with a linear range from 0.1 mg/L to 500 mg/L (R=0.9985) and a detection limit of 0.076 mg/L. Eleven replicate determinations were conducted on 0.5 mg/L humic acid, and the calculated relative standard deviation (RSD) was 3.47%. According to the determinations of humic acid from 5 different groundwater samples with an internal calibration, the standard recovery rates of the samples were between 98.33% and 107.50%. This method was successful in the determination of humic acid without any separation.
- flow-injection /
- chemiluminescence /
- method /
- groudwater /
- humic

HTML全文

施引文献

资源附件(0)

访问统计

计量

文章访问数: 1057
PDF下载数: 1
施引文献: 0

过硫酸钠氧化-流动注射化学发光法在地下水腐植酸含量测定中的应用

Determination of Humic Acid in Groundwater by the Sodium Persulfate Oxidization Flow-Injection Chemiluminescence Method

计量

出版历程

目录