市售黑枸杞中多元素含量測(cè)定與分析

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Determination and Analysis of Multi-Element Content in Commercially Available Lycium ruthenicum Murr.

WANGCan，ZHAOSibiao，ZHANGLi，CHENXian （Kunming Institute for Food and Drug Control （Kunming Institute for Food and Drug Inspection）， Kunming 650034， China）

Abstract： Objective： To determine 21 elements in commercially available Lycium ruthenicum Murr. using ICP-OES/MS technology， reveal its elemental composition diferences compared withred wolfbery，and evaluate the nutritional value and heavy metal contamination risks of Lycium ruthenicum Murr. from different purchasing channels.Method： Lycium ruthenicum Murr. and red wolfberry samples were collcted from three purchasing channels （ofline herbal stores，stret vendors，and e-commerce platforms）. After microwave digestion pretreatment， 21 elements were quantified by inductively coupled plasma optical emission spectrometry （ICP-OES）and inductively coupled plasma massspectrometry（ICP-MS）.Specifically ICP-OES measured 16 macro/micro elements （Al，B，Ba， Ca，F(xiàn)e，K，Mg），hileIC-Manalyzed9traceheavymetalsandhazardous elements （Cr，As，Cd，Pb）.Result：Sgicant quality discrepancies were observed among Lycium ruthenicum Mur. samples from diferent channels， particularly in nutritional elements.Atention should alsobepaid to thecontentofheavymetal elements （suchasCd）andbealert to potential hidden qualityandsafetyrisks.Conclusion：The diferenceofthecontentofeach elementin Lycium ruthenicum Mur.mayberelated tothedifferentenrichmentcharacteristicsof thesaline alkalisoilenvironment inwhich it grows，and the quality of Lycium ruthenicum Murr. varies greatly with different purchase channels.

Keywords： Lycium ruthenicum Murr.; element determination; heavy metal analysis; inductively coupled plasm： optical emisson spectrometry （ICP-OES）; inductively coupled plasma mass spectrometry （ICP-MS）

枸杞是近年來人們關(guān)注度比較高的藥食同源物質(zhì)，黑枸杞作為其中的一員，含有豐富的天然原花青素、枸杞多糖及多種微量元素[]，具有極高的營養(yǎng)價(jià)值。（剩余4360字）