摘要
通过对测定元素质量数和内标元素的选择,并对存在的干扰进行校正,采用电感耦合等离子体质谱(ICP-MS)法测定大米中铬、镍、铜、砷、镉、铅的含量。各元素测定值的相对标准偏差RSD(n=6)在0.61%~2.2%,加标回收率在92.8%~108%。用来测定标准物质GBW 10011、GBW10022、GBW(E)100348、GBW(E)100361,各元素的测定值与标准值一致,能够满足大米中重金属元素的测定要求。
The content of chromium, nickel, copper, arsenic, cadmium and lead in rice was determined by inductively coupled plasma mass spectrometry (ICP-MS) by selecting the mass and internal standard elements of the measured elements and correcting the existing interference. The relative standard deviation RSD ( n =6) of each element was between 0.61% and 2.2%, and the recovery was between 92.8% and 108%. Standard reference materials of GBW 10011, GBW 10022, GBW (E) 100348 and GBW (E) 100361 were analyzed by the above methods. The measured values of each element were in accordance with the standard values. The proposed method can meet the determination requirements of the heavy metal elements in rice.
作者
欧朝接
吴琼婧
韦东
韦如凤
莫东江
OU Chaojie;WU Qiongjing;WEI Dong;WEI Rufeng;MO Dongjiang(Guangxi Zhuang Autonomous Region Center for Analysis and Test Research,Nanning,Guangxi 530022,China)
出处
《中国无机分析化学》
CAS
2019年第2期5-8,共4页
Chinese Journal of Inorganic Analytical Chemistry
基金
广西壮族自治区直属公益性科研院所基本科研业务费专项资助(2017ACZ10)
关键词
电感耦合等离子体质谱法
微波消解
稻谷
铬
镍
铜
砷
镉
铅
inductively coupled plasma mass spectrometry
microwave digestion
rice
chromium
nickel
copper
arsenic
cadmium
lead