天然药物的污染是质量问题的表现形式之一。根据目前了解天然药物中污染的物质主要有有害金属、农药、微生物、虫害及异物等,兹分述如下。各类污染一、有害金属除我们前已介绍过的国外情况外,近年有对80个生药用原子吸收光谱法测定铅、镉、铊、汞者。前三者分别含有0.01～5.0ppm,0.01～0.6ppm,<0.01ppm。其中约75%的 Pollution of natural medicines is one of the manifestations of quality problems. According to the current understanding of the pollution of natural medicines, there are mainly harmful metals, pesticides, microorganisms, insect pests, and foreign bodies. Various types of pollution First, harmful metals In addition to the foreign cases that we have introduced before, in recent years there are 80 crude drugs using atomic absorption spectrometry to determine lead, cadmium, barium, mercury. The first three contain 0.01 to 5.0 ppm, 0.01 to 0.6 ppm, and <0.01 ppm, respectively. About 75% of them