CAJ | 학술논문

建立了蜂胶中多个重金属元素的快速测定方法。选择正丙醇＋二甲苯（体积比70∶30）稀释蜂胶后，采用电感耦合等离子体质谱（ICP‐MS）法直接分析稀释液中的Cr ，Ni ，As ，Cd ，Sb ，Sn ，Hg ，Pb等重金属元素。为防止稀释样品中高碳有机物的不完全燃烧在质谱锥口产生积碳，通过在等离子工作气体中通入低浓度氧气使高碳有机物充分燃烧。应用八极杆碰撞反应池（O RS ）技术消除了多原子离子对待测元素产生的质谱干扰，通过研究He碰撞气流速的变化对Cr ，Ni ，As预估检测限（EDL）的影响情况确定了最佳碰撞气流速，采用单内标元素Rh消除了质谱基体效应，维持了分析信号的稳定。分析结果表明，8个重金属元素的检出限在20.8～102.7 ng?L －1之间，回收率为92.0％～109.0％，相对标准偏差（RSD ）≤3.5％。方法可快速、灵敏、准确地测定蜂胶中8种重金属元素含量。
건립료봉효중다개중금속원소적쾌속측정방법。선택정병순＋이갑분（체적비70∶30）희석봉효후，채용전감우합등리자체질보（ICP‐MS）법직접분석희석액중적Cr ，Ni ，As ，Cd ，Sb ，Sn ，Hg ，Pb등중금속원소。위방지희석양품중고탄유궤물적불완전연소재질보추구산생적탄，통과재등리자공작기체중통입저농도양기사고탄유궤물충분연소。응용팔겁간팽당반응지（O RS ）기술소제료다원자리자대대측원소산생적질보간우，통과연구He팽당기류속적변화대Cr ，Ni ，As예고검측한（EDL）적영향정황학정료최가팽당기류속，채용단내표원소Rh소제료질보기체효응，유지료분석신호적은정。분석결과표명，8개중금속원소적검출한재20.8～102.7 ng?L －1지간，회수솔위92.0％～109.0％，상대표준편차（RSD ）≤3.5％。방법가쾌속、령민、준학지측정봉효중8충중금속원소함량。
In current study ,a method was established for simultaneous quantitative analysis of Cr ,Ni ,As ,Cd ,Sb ,Sn ,Hg and Pb in propolis by using inductively coupled plasma mass spectrometry .Before analyzed by ICP‐MS ,the propolis was diluted with n‐propanol/xylene(70∶30 ,φ) .Organic sample can remain stable by diluting with n‐propanol/xylene ,result from long‐time sample dispersion in the solution .Carbon accumulation on the sampling cone ,which comes from the high carbon content of but‐ter ,will clog the orifice and decrease analysis sensitivity .Thus a small amount of oxygen was added into the argon gas line to eliminate carbon .ORS was used to eliminate the polyatomic interferences caused by the high salty matrixes .The effects of the He collision gas flow rate on estimating detection limits of Cr ,Ni and As were investigated .The matrix effects and the instru‐ment drift have been calibrated with Rh as internal standard element .The results show that the detection limits is in the range of 20.8~102.7 ng?L -1 ,the recovery is in the range of 92.0% ~109.0% ,and the RSD is less than 3.5% .This method was sim‐ple ,sensitive and precise to simultaneously analyze 8 heavy metal elements in propolis .