食品安全质量检测学报
食品安全質量檢測學報
식품안전질량검측학보
FOOD SAFETY AND QUALITY DETECTION TECHNOLOGY
2014年
10期
3238-3242
,共5页
茶叶%稀土%微波消解%电感耦合等离子质谱
茶葉%稀土%微波消解%電感耦閤等離子質譜
다협%희토%미파소해%전감우합등리자질보
tea%rare earth elements%microwave digestion%inductively coupled plasma-mass spectrometry
目的：建立一种简单、快速、灵敏的同时测定茶叶中5种稀土元素的电感耦合等离子体质谱方法。方法比较了微波消解和湿法消解两种前处理方法,比较了电感耦合等离子发射光谱(inductively coupled plasma-atomic emission spectrometry, ICP-AES)和电感耦合等离子质谱(inductively coupled plasma-mass spec-trometry, ICP-MS)两种测定方法。优化了微波消解程序和ICP-MS的仪器条件,通过加标试验和国家标准物质茶叶GBW10016的测定分析其准确性。结果 ICP-MS检测灵敏度高,仪器检出限为0.06~0.18μg/kg,微波消解的加标回收率较高,为97.65%~103.28%(n=6),其测定国家标准物质茶叶的准确度为91.4%~108.6%。结论对于茶叶中稀土元素的检测,采用微波消解、ICP-MS测定的方法,选择性和灵敏度好、回收率高、重现性好、定量准确,更适用于茶叶中稀土元素的测定。
目的：建立一種簡單、快速、靈敏的同時測定茶葉中5種稀土元素的電感耦閤等離子體質譜方法。方法比較瞭微波消解和濕法消解兩種前處理方法,比較瞭電感耦閤等離子髮射光譜(inductively coupled plasma-atomic emission spectrometry, ICP-AES)和電感耦閤等離子質譜(inductively coupled plasma-mass spec-trometry, ICP-MS)兩種測定方法。優化瞭微波消解程序和ICP-MS的儀器條件,通過加標試驗和國傢標準物質茶葉GBW10016的測定分析其準確性。結果 ICP-MS檢測靈敏度高,儀器檢齣限為0.06~0.18μg/kg,微波消解的加標迴收率較高,為97.65%~103.28%(n=6),其測定國傢標準物質茶葉的準確度為91.4%~108.6%。結論對于茶葉中稀土元素的檢測,採用微波消解、ICP-MS測定的方法,選擇性和靈敏度好、迴收率高、重現性好、定量準確,更適用于茶葉中稀土元素的測定。
목적：건립일충간단、쾌속、령민적동시측정다협중5충희토원소적전감우합등리자체질보방법。방법비교료미파소해화습법소해량충전처리방법,비교료전감우합등리자발사광보(inductively coupled plasma-atomic emission spectrometry, ICP-AES)화전감우합등리자질보(inductively coupled plasma-mass spec-trometry, ICP-MS)량충측정방법。우화료미파소해정서화ICP-MS적의기조건,통과가표시험화국가표준물질다협GBW10016적측정분석기준학성。결과 ICP-MS검측령민도고,의기검출한위0.06~0.18μg/kg,미파소해적가표회수솔교고,위97.65%~103.28%(n=6),기측정국가표준물질다협적준학도위91.4%~108.6%。결론대우다협중희토원소적검측,채용미파소해、ICP-MS측정적방법,선택성화령민도호、회수솔고、중현성호、정량준학,경괄용우다협중희토원소적측정。
ObjectiveTo establish a rapid and sensitive method which can determine 5 sorts of rare earth elements in tea by inductively coupled plasma-mass spectrometry (ICP-MS) method.Methods The samples were determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES) and ICP-MS with microwave digestion and wet digestion. Microwave digestion procedure and ICP-MS instrument condition were optimized.ResultsThe recoveries of rare earth elements determined by ICP-MS with microwave digestion were 97.65%~103.28% (n=6), while the detection limits were 0.06~0.18μg/kg.ConclusionDetermination of rare earth elements in tea by ICP-MS with microwave digestion had many advantages, such as high sensitivity and high selectivity, accurate quantification, high precision and accuracy, high reproducibility and high recov-ery rate, which was suitable for the detection of rare earth elements in tea.
