微波消解ICP-AES聯(lián)用測(cè)定食用菌中鋅、鐵、錳和銅的含量
Determination of Zn,Fe,Mn and Cu in Fruit Bodies of Six Edible Mushroom Species Using Microwave Digestion Combined with Inductively Coupled Plasma Atomic Emission Spectroscopy
【作者】 陳偉珍; 蘇文義; 楊桂珍; 李水坤; 陳彥蘭;
【Author】 CHEN Weizhen,SU Wenyi,YANG Guizhen,LI Shuikun,CHEN Yanlan Chemistry Science and Technology School,Zhanjiang Normal University,Zhanjiang,Guangdong 524048,China
【機(jī)構(gòu)】 湛江師范學(xué)院化學(xué)科學(xué)與技術(shù)學(xué)院;
【摘要】 采用微波消解技術(shù)處理食用菌樣品,用電感耦合等離子體原子發(fā)射光譜法(ICP-AES)同時(shí)測(cè)定鋅、鐵、錳、銅等微量元素的含量。實(shí)驗(yàn)結(jié)果表明:優(yōu)化的消解劑用量為每0.25g食用菌子實(shí)體4.5mL HNO3+4.5mL H2O2;該方法適合測(cè)定食用菌中的鋅、鐵、錳、銅等微量元素,具簡(jiǎn)便、快速、穩(wěn)定、準(zhǔn)確等優(yōu)點(diǎn)。方法的檢出限為0.77~1.54μg/L,加標(biāo)回收率為91.0%~101%,相對(duì)標(biāo)準(zhǔn)偏差為0.95%~7.10%。
【Abstract】 Levels of Zn,Fe,Mn and Cu in fruit bodies of six edible fungi were determined using microwave digestion combined with inductively coupled plasma atomic emission spectroscopy(ICP-AES).Optimal digestion of fruit body material was achieved using a solution of 4.5 mL HNO3+4.5 mL H2O2 to treat 0.25 g tissue.Detection limits and average recovery rates for the four elements ranged between 0.77-1.54 μg/L and 91%-101%,respectively,and RSD values varied between 0.95%-7.1%.ICP-AES represents a simple,rapid...
【關(guān)鍵詞】 食用菌; 微量元素; 微波消解; ICP-AES;
【Key words】 Edible fungus; trace element; microwave digestion; ICP-AES;
【基金】 廣東省湛江師范學(xué)院校級(jí)青年項(xiàng)目(編號(hào):QL1006)的部分研究?jī)?nèi)容
【分類號(hào)】TS219;O657.3