免疫親和凈化-液相色譜-串聯(lián)質(zhì)譜法測定貝類中腹瀉性貝類毒素
發(fā)布時間:2019-07-26 13:00
【摘要】:建立貝類中腹瀉性貝類毒素的免疫親和凈化-液相色譜-串聯(lián)質(zhì)譜分析方法。樣品采用80%甲醇溶液提取,選擇磷酸鹽緩沖液與提取液(4∶1,V/V)混合稀釋后,免疫親和選擇專一凈化,液相色譜-串聯(lián)質(zhì)譜分析。根據(jù)腹瀉性免疫親和柱的使用特性,對上樣液、淋洗液、洗脫液等參數(shù)進行優(yōu)化。質(zhì)譜采用電噴霧負離子電離,多反應(yīng)監(jiān)測模式,外標法定量。3種分析物在1.0~100μg/L質(zhì)量濃度范圍內(nèi)線性相關(guān)系數(shù)均大于0.996,對應(yīng)的檢出限和定量限均為0.3μg/kg和1.0μg/kg,平均回收率為82.7%~94.3%,相對標準偏差為0.70%~7.61%。本方法基質(zhì)干擾小、凈化效果強、靈敏度高,適合貝類中腹瀉性貝類毒素的分析測定。
[Abstract]:A method for the determination of diarrhea shellfish toxins in shellfish by immunoaffinity purification liquid chromatography-tandem mass spectrometry (LC-MS) was established. The sample was extracted with 80% methanol solution, diluted with phosphate buffer and extract (4 鈮,
本文編號:2519566
[Abstract]:A method for the determination of diarrhea shellfish toxins in shellfish by immunoaffinity purification liquid chromatography-tandem mass spectrometry (LC-MS) was established. The sample was extracted with 80% methanol solution, diluted with phosphate buffer and extract (4 鈮,
本文編號:2519566
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