發(fā)布時(shí)間：2018-07-03 08:04

  本文選題：茶葉 + 稀土元素�。� 參考：《食品研究與開(kāi)發(fā)》2016年21期

【摘要】：以貴州省地產(chǎn)茶葉為研究對(duì)象,采用ICP-MS分析貴州省貴陽(yáng)市及7個(gè)地州共95份茶葉樣品中16種稀土元素含量特征。結(jié)果表明:以稀土氧化物總量計(jì),95份樣品均檢出稀土元素,總殘留量范圍為0.026 mg/kg~2.352 mg/kg,其中以輕稀土鑭、銪、鈰、釤、鐠、釹含量最高,占總量的62.01%,4份樣品超出了GB 2762-2012《食品安全國(guó)家標(biāo)準(zhǔn)食品中污染物限量》中規(guī)定的茶葉中稀土元素限量標(biāo)準(zhǔn)(≤2.0 mg/kg),合格率為95.79%,總體看來(lái),貴州省地產(chǎn)茶葉中稀土元素污染較小,但仍需加強(qiáng)管理和監(jiān)測(cè)。
[Abstract]:The contents of 16 rare earth elements in 95 tea samples from Guiyang and 7 prefectures of Guizhou Province were analyzed by ICP-MS. The results showed that the rare earth elements were detected in 95 samples measured by the total amount of rare earth oxides, and the total residual amount was 0.026 mg/kg~2.352 mg / kg. The content of lanthanum, europium, cerium, samarium, praseodymium and neodymium was the highest. Four samples accounted for 62.01% of the total amount exceeded the limit standard of rare earth elements in tea (鈮，

本文編號(hào)：2092971