当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2013年
11期
1624-1626
,共3页
微波消解%双道原子荧光%沙棘%铅%砷%汞
微波消解%雙道原子熒光%沙棘%鉛%砷%汞
미파소해%쌍도원자형광%사극%연%신%홍
Microwave digestion%Double line AFS%Sea-buckthorn%Lead%Arsenic%Mercury
采用微波消解技术-双道原子荧光法测定了沙棘汁、沙棘果粉中的痕量元素铅、砷、汞。对仪器的工作条件作了详述,还就各种对测定有影响的因素,包括样品消解条件,硼氢化钾的浓度、介质的种类及浓度等也作了研究并予以优化选择。方法对这3种元素的检出限为0.0001,0.0002,0.00002 mg/kg，相对标准偏差为1.2%~4.83%，用加标回收率评价方法的准确性，回收率为92%~105%。
採用微波消解技術-雙道原子熒光法測定瞭沙棘汁、沙棘果粉中的痕量元素鉛、砷、汞。對儀器的工作條件作瞭詳述,還就各種對測定有影響的因素,包括樣品消解條件,硼氫化鉀的濃度、介質的種類及濃度等也作瞭研究併予以優化選擇。方法對這3種元素的檢齣限為0.0001,0.0002,0.00002 mg/kg，相對標準偏差為1.2%~4.83%，用加標迴收率評價方法的準確性，迴收率為92%~105%。
채용미파소해기술-쌍도원자형광법측정료사극즙、사극과분중적흔량원소연、신、홍。대의기적공작조건작료상술,환취각충대측정유영향적인소,포괄양품소해조건,붕경화갑적농도、개질적충류급농도등야작료연구병여이우화선택。방법대저3충원소적검출한위0.0001,0.0002,0.00002 mg/kg，상대표준편차위1.2%~4.83%，용가표회수솔평개방법적준학성，회수솔위92%~105%。
Trace lead, arsenic and mercury in sea-buckthorn juice and sea-buckthorn-fruit-powder were determined by using microwave digestion-double lines AFS. The working conditions of instrument were discussed as well as influential factors including the sample digestion condition, potassium borohydride dosage, concentration and kinds of acids. The results show that detection limit of the method for each element is 0.000 1, 0.000 2, 0.000 02 mg/kg, respectively;The RSD is in the range of 1.20%~4.83%and the recoveries are in the range of 92%~105%.
