ICP-MS测定甘肃某农场大气颗粒物中的铬、铜、砷、镉、铅含量

空气滤膜吸附采集甘肃某农场大气粉尘样品,采用盐酸—硝酸—氢氟酸—高氯酸溶解,电感耦合等离子体质谱法（ICP-MS）同时测定溶液中铬、铜、砷、镉、铅等重金属元素含量,分析农田环境大气颗粒中的重金属元素对农作物的影响,同时验证不同仪器工作参数对测定结果的影响。实验表明：在选定的实验条件下,分析元素的检出限低,准确性和精密度...

Determination of Heavy Metals by ICP-MS in Atmospheric Particulate of Environment of Crops Growing

Dissolving the sample of dust absorbed in the atmosphere collected from a farm through the air filters with hydrochloric acid,nitric acid,hydrofluoric acid,and perchloric acid,and then determines harmful heavy metals by inductively coupled plasma mass spectrometry（ICP-MS）,like Chromium,copper,arsenic,cadmium,lead and so on to test air quality of crops growth atmospheric environment.It is verified that the operating parameters of different instruments have influence on the determination results.Experiments show that： in the selected experimental conditions,the elements of being analyzed have low detection limits,accuracy and good precision.Sample analysis results show that the main heavy metal pollutants in the crops growth atmospheric environment are chromium,copper,arsenic,cadmium and lead;the relative standard deviation（RSD） of the results of several determination of national standard sample are less than 5%.It is concluded that the air quality of the farm is good and suitable for crops growth.