Thirteen trace metals (Li, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Rb, Sr, Nb, and Mo) and two toxic metals (Cd and Pb) in two kinds of garlic bulbs have been quantified. Following the dehydration process, the garlic residues are digested using 10.0 mL of an acid mixture of HNO₃:H₂O₂:HCl (3:1:1, v/v/v). The trace metal assay is accomplished by inductively coupled plasma mass spectrometry (ICP-MS). Results reveal that the metal levels for the garlic bulbs with purple skin in dry weight are 14.5, 1.32, 3.03, 3.88, 13.0, 2.50, 1.00, 64.1, 139.6, 13.6, 18.4, 0.29, 0.11, 1.60, and 0.52 mg/kg for Li, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Rb, Sr, Nb, Mo, Cd, and Pb, respectively, while the corresponding metal concentrations in the garlics with white skin are 22.9, 2.70, 3.95, 6.60, 19.7, 3.72, 1.16, 79.9, 149.8, 19.7, 24.0, 0.33, 0.43, 0.84, and 0.30 mg/kg, respectively. In general, the trace metals in both varieties are clearly under the FAO/WHO maximum permissible limits. However, it is observed that the garlics with white skin show higher quantities of essential/possible essential metals and lower levels of toxic metals, demonstrating the garlics with white skin exhibit a higher nutrition quality and are a better source of essential minerals.

中文翻译：

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大蒜鳞茎中微量金属的测定：电感耦合等离子体质谱法的品种鉴别

定量了两种大蒜鳞茎中的十三种微量金属（Li，V，Cr，Mn，Fe，Co，Ni，Cu，Zn，Rb，Sr，Nb和Mo）和两种有毒金属（Cd和Pb）。脱水后，使用10.0 mL的HNO ₃：H ₂ O ₂酸混合物消化大蒜残留物。：HCl（3：1：1，v / v / v）。痕量金属测定是通过电感耦合等离子体质谱法（ICP-MS）完成的。结果表明，干重为紫色的大蒜鳞茎的金属重量为14.5、1.32、3.03、3.88、13.0、2.50、1.00、64.1、139.6、13.6、18.4、0.29、0.11、1.60和0.52 mg / kg分别为Li，V，Cr，Mn，Fe，Co，Ni，Cu，Zn，Rb，Sr，Nb，Mo，Cd和Pb，而白皮大蒜中相应的金属浓度为22.9、2.70，分别为3.95、6.60、19.7、3.72、1.16、79.9、149.8、19.7、24.0、0.33、0.43、0.84和0.30 mg / kg。总的来说，两个品种中的痕量金属显然都在FAO / WHO的最大允许限量之下。然而，据观察，白皮大蒜显示出较高数量的必需/可能必需金属和较低含量的有毒金属，