QuEChERS-ICP-MS法测定即食 菌菇休闲脆片中4种重金属含量及基质干扰消除

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中图分类号：TS207.3 文献标志码：A 文章编号：1674-0270（2025）32-0123-03

Determination of Four Heavy Metal Contents in Instant Mushroom Crisps by QuEChERS-ICP-MS and Elimination ofMatrixInterferences

JIANG Xiaofang （KunshanFood Quality InspectionCo.，Ltd.，Suzhou2153Oo，China）

Abstract：Toaddress the interferences of high polysaccharideand high fiber matrix inready-to-eat mushroom crisps onthedetectionofheavymetals，amethodfordetermining thecontentsoffourheavymetals，namelylead （Pb），cadmium （Cd），mercury （ Hg ），and arsenic （As），in this type of food was established bycombining QuEChERS technology with inductivelycoupled plasma mass spectrometry （ICP ′- MS）.The pretreatment conditionswere optimized specifically to eliminate the interferenceof the matrix.Theresultsshow thattheoptimal QuEChERS pretreatment （combination of sorbents：150 mg C 18 ⋅+ 100mgPSA + 50 mg GCB） combined with microwave digestion can effectively remove the interferencesof polysaccharidesandpigments in the mushroommatrix.Thelinearcorrelationcoefficients （r）ofthefour elements are all ⩾0.999 7，the limits of detection are 0.0o0 7～0.0O2 3 mg/kg，the spiked recoveries are 80.0% 2 102.0% and the relative standard deviations （ SRSD are ⩽3.5% .The contents of heavy metals in12 batches of commercially available samples allmeet the limit requirements of GB2762-2O22，and the matrix interference eliminationrate is over 90% .This method issimpleinpretreatment，hasstronganti-interferenceability，makingitsuitableforbatchdetectionofheavymetalsin ready-to-eatmushroom crisps，providingdedicated technical supportforthequality controlofthis niche snack food.

KeyWords：QuEChERS technology; ICP-MS; instant mushroom crisps;heavy metals

即食菌菇休闲脆片作为近年兴起的健康小众休闲食品，以香菇、杏鲍菇、金针菇等为原料，经低温烘烤制成，兼具营养性与便携性，市场需求逐年增长[。（剩余3176字）