摘要
本文报告了氢化发生原子吸收光谱测定食品中砷的方法。ＶＡ－９０气态原子化装置与固定原子吸收分光光度计 ＷＦＸ－ＩＦ２配套，以峰高为测量方式，可测定ＰＰｂ级汞、砷、硒以及锑、锡、锗、碲、铋和铅，具有灵敏度高（砷特征浓度为０．３μｇ／Ｌ）、曲线线性好（砷回归系数为０．９９９２）、准确度高（砷回收率为９３．７％～１０５％），重现性好（砷的相对标准偏差１．４％～３．０％）、通用性强之特点。
The method is described for the determination of arsenic in food by using hydride generation - atomic ab- sorption spectrop hotometry.VA-90 gas atomicity device is mated with atomic absorption spectrophotometer. It is a de- vice for the determination of PPb mercury、arsenic、selenium and stibium、tin、germanium、tellurium、bismuth、lead. The test' s sensitivity is high(the characteristic density is 0.30μg/L), reproducibility is good(the variation coefficient is 0.9992),accuracy is high(the rate of recovery is 93 .7% -105% )、versatility is good.
出处
《食品工业》
北大核心
2000年第5期41-43,共3页
The Food Industry
