| 王长芹,杨金玲,公维磊,孙养光.顺序注射氢化物发生-原子荧光光谱法同时测定牛奶砷硒含量[J].济宁医学院学报,2011,(3):194-196 |
| 顺序注射氢化物发生-原子荧光光谱法同时测定牛奶砷硒含量 |
| Simultaneous determination of arsenic and selenium in milk by sequence injection hydride generation atomic fluorescence spectrometry |
| 投稿时间：2011-04-23 |
| DOI：10.3969/j.issn.1000-9760.2010.06.017 |
| 中文关键词: 顺序注射氢化物发生-原子荧光光谱法|牛奶|砷|硒 |
| 英文关键词: Sequence injection hydride generation atomic fluorescence spectrometry|Milk|Arsenic|Selenium |
| 基金项目: |
| 作者 | 单位 | | 王长芹 | 济宁医学院医学检验系, 山东济宁 272067 | | 杨金玲 | 济宁医学院医学检验系, 山东济宁 272067 | | 公维磊 | 济宁医学院医学检验系, 山东济宁 272067 | | 孙养光 | 济宁医学院医学检验系, 山东济宁 272067 |
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| 中文摘要: |
| 目的 建立顺序注射氢化物发生-原子荧光光谱法测定牛奶中砷和硒含量的方法。方法 利用硝酸-高氯酸(4+1)混合酸消解样品,对仪器工作参数进行了优化,考察了载流酸度、硼氢化钾浓度对荧光强度的影响。在优化条件下,用顺序注射氢化物发生-原子荧光法测定牛奶中砷和硒的含量。结果 砷浓度在0.20~100 mg/L、硒在0.30~100 mg/L范围内具有良好的线性关系,相关系数分别为0.9998、0.9999;检出限砷为0.032 mg/L,硒为0.066 mg/L;相对标准偏差砷 < 1.60%,硒 < 5.01%;砷和硒的加标回收率分别为98.60%~101.6%和97.63%~99.48%。结论 方法灵敏度高、准确性好、分析快速、操作简单。用于牛奶中砷和硒的同时测定,结果令人满意。 |
| 英文摘要: |
| Objective To establish a method for the determination of arsenic and selenium in milk by sequence injection hydride generation atomic fluorescence spectrometry.Methods The operating parameters of the instrument were optimized.The influences of the acidities of carrier solution and the amount of potassium borohydride on the fluorescence intensity were studied.Under the optimum conditions, arsenic and selenium were determined in milk using mixed acid ashing by sequence injection hydride generation atomic fluorescence spectrometry.Results There was a good linear relationship at the concentration of 0.20~100 mg/L for As and at 0.30~100 mg/L for Se.The correlation coefficient of As was 0.9998 and that of Se was 0.9999.The detection limit was 0.032 mg/L for As and 0.066 mg/L for Se.The relative standard deviation for As was less than 1.60%, and that for Se was less than 5.01%.The recovery for As was 98.60%~101.6%, and that for Se was 97.63%~99.48%.Conclusion The method was sensitive, accurate, rapid and simple.It was employed for simultaneous measurement of As and Se in milk and satisfactory results were obtained. |
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