密闭微波消解ICP-AES法测定大气颗粒物中金属元素

Determination of Metals in Atmospheric Particles by Inductively Coupled Plasma Atomic Emission Spectrometry with Microwave Digestion

采用过氯乙烯滤膜采集、密闭微波消解、电感耦合等离子发射光谱法测定大气颗粒物中铅、镍、铬、铜、铁、锌、锰、钡、镉,优化了试验条件。方法线性良好,各元素的检出限在0.001 mg/L^0.01 mg/L之间,滤膜样品测定的RSD为0.6%~2.9%,加标回收率为96.0%~105%。

The method was established for determining lead, nickel, chromium, copper, iron, zinc, manganese, barium and cadmium in atmospheric particulates by ICP- AES with microwave digestion and perchloroethylene filter collection of the samples. The experimental conditions were optimized to produce the following results： good linearity, the detection limits of all elements from 0. 001 mg/L to 0.01 mg/L, the RSDs of the filter samples from 0.6% to 2.9% , the recoveries from 96.0% to 105%.