江西农业学报
江西農業學報
강서농업학보
ACTA AGRICULTURAE JIANGXI
2014年
7期
108-110,114
,共4页
商洛%绿茶%微量元素%微波消解%FAAS法%测定
商洛%綠茶%微量元素%微波消解%FAAS法%測定
상락%록다%미량원소%미파소해%FAAS법%측정
Shangluo%Green tea%Trace element%Microwave digestion%FAAS method%Determination
以硝酸-双氧水为消解液,采用微波消解-火焰原子吸收光谱( FAAS)法测定了不同产地商洛绿茶中6种微量元素( Se、Fe、Mn、Zn、Mg、Cu)的含量。结果显示:该方法的加标回收率为98.30%~102.40%, RSD为0.73%~2.81%。测定得到的绿茶样品中微量元素的含量分别为Se:2.63~5.23μg/mL;Fe:96.86~112.21μg/mL;Mn:193.44~231.18μg/mL;Zn:56.34~73.15μg/mL;Mg:164.53~183.92μg/mL;Cu:11.62~17.11μg/mL。
以硝痠-雙氧水為消解液,採用微波消解-火燄原子吸收光譜( FAAS)法測定瞭不同產地商洛綠茶中6種微量元素( Se、Fe、Mn、Zn、Mg、Cu)的含量。結果顯示:該方法的加標迴收率為98.30%~102.40%, RSD為0.73%~2.81%。測定得到的綠茶樣品中微量元素的含量分彆為Se:2.63~5.23μg/mL;Fe:96.86~112.21μg/mL;Mn:193.44~231.18μg/mL;Zn:56.34~73.15μg/mL;Mg:164.53~183.92μg/mL;Cu:11.62~17.11μg/mL。
이초산-쌍양수위소해액,채용미파소해-화염원자흡수광보( FAAS)법측정료불동산지상락록다중6충미량원소( Se、Fe、Mn、Zn、Mg、Cu)적함량。결과현시:해방법적가표회수솔위98.30%~102.40%, RSD위0.73%~2.81%。측정득도적록다양품중미량원소적함량분별위Se:2.63~5.23μg/mL;Fe:96.86~112.21μg/mL;Mn:193.44~231.18μg/mL;Zn:56.34~73.15μg/mL;Mg:164.53~183.92μg/mL;Cu:11.62~17.11μg/mL。
Taking nitric acid plus hydrogen peroxide as digestive solution , through adopting the method of flame atomic absorp-tion spectrophotometry ( FAAS) with microwave digestion , this study determined the contents of 6 kinds of trace elements ( Se, Fe, Mn, Zn, Mg, Cu) in Shangluo green teas from different producing areas .The results showed that the standard -adding recovery rates of determined 6 trance elements were from 98.30%to 102.40%.The relative standard deviations in the determination of these trace elements ranged from 0.73%to 2.81%.Through determination by this method , the contents of Se, Fe, Mn, Zn, Mg and Cu in green tea samples were 2.63~5.23, 96.86~112.21, 193.44~231.18, 56.34 ~73.15, 164.53~183.92, and 11.62 ~17.11 μg/mL respectively.