
Keywords: ICP-MS، طیف سنجی جرمی پلاسما به صورت القایی; Humans; Placenta; Postpartum period; Micronutrients; Trace elementsAI, adequate intake; As, arsenic; Cd, cadmium; Co, cobalt; Cu, copper; Fe, iron; Hg, mercury; ICP-MS, inductively coupled plasma mass spectrometry; Mn, manganese; Mo, molybdenum; Pb, lead;