化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
2期
23-26
,共4页
朱臻怡%魏云计%冯民%王小晋%熊华萱%何健
硃臻怡%魏雲計%馮民%王小晉%熊華萱%何健
주진이%위운계%풍민%왕소진%웅화훤%하건
高效液相色谱-串联质谱法(HPLC-MS/MS)%抗氧化剂%食用油
高效液相色譜-串聯質譜法(HPLC-MS/MS)%抗氧化劑%食用油
고효액상색보-천련질보법(HPLC-MS/MS)%항양화제%식용유
high performance liquid chromatography-tandem mass spectrometry%antioxidants%edible oil
利用高效液相色谱-串联质谱(HPLC-MS/MS)同时测定食用油中16种抗氧化剂。食用油中的抗氧化剂经正己烷溶解、含L-抗坏血酸棕榈酸盐的乙腈萃取后,经C18柱分离,乙腈-0.1%甲酸溶液体系为流动相进行梯度洗脱,多反应监测模式(MRM)检测,外标法定量。16种抗氧化剂呈良好的线性关系(r2=0.9912~0.9988),方法的测定低限为0.1~0.5 mg/kg,在测定低限浓度水平下的平均回收率为78.6%~101.2%,相对标准偏差为3.50%~13.19%(n=10)。该方法准确、灵敏、重现性好,可用于食用油中16种抗氧化剂的检测。
利用高效液相色譜-串聯質譜(HPLC-MS/MS)同時測定食用油中16種抗氧化劑。食用油中的抗氧化劑經正己烷溶解、含L-抗壞血痠棕櫚痠鹽的乙腈萃取後,經C18柱分離,乙腈-0.1%甲痠溶液體繫為流動相進行梯度洗脫,多反應鑑測模式(MRM)檢測,外標法定量。16種抗氧化劑呈良好的線性關繫(r2=0.9912~0.9988),方法的測定低限為0.1~0.5 mg/kg,在測定低限濃度水平下的平均迴收率為78.6%~101.2%,相對標準偏差為3.50%~13.19%(n=10)。該方法準確、靈敏、重現性好,可用于食用油中16種抗氧化劑的檢測。
이용고효액상색보-천련질보(HPLC-MS/MS)동시측정식용유중16충항양화제。식용유중적항양화제경정기완용해、함L-항배혈산종려산염적을정췌취후,경C18주분리,을정-0.1%갑산용액체계위류동상진행제도세탈,다반응감측모식(MRM)검측,외표법정량。16충항양화제정량호적선성관계(r2=0.9912~0.9988),방법적측정저한위0.1~0.5 mg/kg,재측정저한농도수평하적평균회수솔위78.6%~101.2%,상대표준편차위3.50%~13.19%(n=10)。해방법준학、령민、중현성호,가용우식용유중16충항양화제적검측。
A method was developed for the simultaneous determination of 16 antioxidants in edible oil using high performance liquid chromatography-tandem mass spectrometry. The antioxidants in the sample were dissolved with hexane, extracted with acetonitrile containing ascorbyl palpitate, separated on a reversed-phase C18 column with a mobile phase of acetonitrile-water containing 0.1%formic acid by gradient elution. The detection was performed by MS/MS under multiple reaction monitoring(MRM)mode, and the quantitation was carried out by the external standard method. The calibration curves showed good linearities for 16 antioxidants with correlation coefficients of 0.991 2-0.998 8. The determination limits of 16 antioxidants were between 0.1 mg/kg and 0.5 mg/kg. Sample were fortifid at the level of the limit of determination with the antioxidants mixed standard solution. The recoveries were between 78.6%and 101.2%, and the relative standard deviations of repeatability were between 3.50%and 13.19%(n=10). The method is reliable, sensitive and reproducible, and can be applied in the determination of 16 antioxidants in edible oil.