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，Fe，K，Mg)，hileIC-Manalyzed9traceheavymetalsandhazardous elements (Cr，As，Cd，Pb).Result：Sgicant quality discrepancies were observed among Lycium ruthenicum Mur. samples from diferent channels ......