摘要
建立松茸中钾、钠、铝、锰、锌、铜、铁、钙、镁的微波消解-电感耦合等离子体发射光谱法测定方法。样品采用3 mL硝酸和2 mL过氧化氢作为消化液,微波消解后,用电感耦合等离子体发射光谱法进行测定。结果表明:各元素线性范围为钠0~2.00μg/mL,钾0~100.00μg/mL,铝、锰、锌、铜、铁、钙、镁均为0~5.00μg/mL,平均回收率在94.14%~102.30%之间,相对标准偏差(RSD)为0.23%~3.21%范围,检出限为0.33~5.25 mg/kg,定量限为1.10~17.50 mg/kg。测得四川省6个主产区松茸中钾、钠、铝、锰、锌、铜、铁、钙、镁的含量范围分别为21~35 g/kg、42.1~117 mg/kg,183~1210 mg/kg,10.2~91.8 mg/kg,23.1~69.5 mg/kg,21.6~37.2 mg/kg,159~1 174 mg/kg,51.2~349 mg/kg,441~740 mg/kg。该方法简便、快速、准确,适用于松茸中上述9种元素的同时测定。
A method for the determination of K、Na、Al、Mn、Zn、Cu、Fe、Ca、Mg in tricholoma matsutake by microwave digestion-inductively coupled plasma atomic emission spectrometry(ICP-AES)was established.The samples were digested with 3 mL nitric acid and 2 mL hydrogen peroxide,and then determined by ICP-AES.The results showed that the linear range of Na was 0-2.00μg/mL,K was 0-100.00μg/mL,Al,Mn,Zn,Cu,Fe,Ca and Mg were 0-5.00μg/mL.The average recoveries for all elements ranged from 94.14%-102.3%.The relative standard deviation ranged(RSD)ranged from 0.23%to 3.21%,the detection limit were 0.33-5.25 mg/kg,and the quantitative limit were 1.10-17.50 mg/kg.The contents of K、Na、Al、Mn、Zn、Cu、Fe、Ca、Mg in tricholoma matsutake from six main producing areas in Sichuan province were determined in the range of 21-35 g/kg,42.1-117 mg/kg,183-1210 mg/kg,10.2-91.8 mg/kg,23.1-69.5 mg/kg,21.6-37.2 mg/kg,159-1174 mg/kg,51.2-349 mg/kg,441-740 mg/kg,respectively.This method is simple,rapid,accuracy and suitable for the simultaneous determination of the above nine elements in tricholoma matsutake.
作者
李常雄
邹海民
杨晓松
文君
LI Changxiong;ZOU Haimin;YANG Xiaosong;WEN Jun(Chengdu Center for Disease Control and Prevention,Chengdu 610041,China)
出处
《中国测试》
CAS
北大核心
2019年第10期66-70,共5页
China Measurement & Test
基金
成都市疾病预防控制中心2019年重点科研项目(20190102)
2018年普及应用项目(20180208)
关键词
松茸
金属元素
微波消解
电感耦合等离子体发射光谱法
tricholoma matsutake
metallic element
microwave digestion
inductively coupled plasma atomic emission spectrometry
