【摘要】 石化工业渣泥经Ｈ２ＳＯ４—ＨＮＯ３—ＨＣｌＯ４消解处理后，采用镍作为基体改进剂，偏振塞曼效应扣去背景，实现了砷的石墨炉原子吸收法的直接测定。该方法操作简便、干扰少、灵敏度高。砷的检测下限为０．７ｎｇ／ｍＬ，样品分析回收率达９４％～１０３％，相对标准偏差为４．７％。更多还原

【Abstract】 The paper reports a determination of the content of arsenic in the waste of petrochemical industry by graphite furnace AAS. The determination Condition and digesting method are also explored. In 4% chloric acid medium, with 50μg/mL nickel as matrix modifier,the determination of trace arsenic in waste applied graphite furnace AAS and used Zeeman effect background correction has been developed. The detection lower limit is 0. 7ng/mL and the recovery is between 94% and 103%, the relative standard deviation (RSD) is 4. 7%.更多还原