人体吸入或经口摄入镉(Cd)可导致肾脏、骨、前列腺及肺损害。Cd可引起肺癌、肺气肿和肺纤维化。众所周知,Cd严重污染烟草。本次研究对墨西哥产烟叶及卷烟中Cd含量进行了检测。从墨西哥不同地区贮存库中采集各种商标的香烟55份和48份烟叶为本次研究对象。将烟叶及雪茄和卷烟叶于80℃烘干13小时,精确称取1.4及1.7 g上述烘干的烟叶于两烧杯中,分别加入10 ml浓硝酸和4 ml浓高 Inhalation or oral intake of cadmium (Cd) can cause kidney, bone, prostate and lung damage. Cd can cause lung cancer, emphysema and pulmonary fibrosis. As we all know, Cd seriously pollutes tobacco. This study tested the content of Cd in tobacco leaf and cigarette in Mexico. Fifty-five and forty-eight cigarettes of various brands were collected from different regions in Mexico as the study object. Tobacco leaf and cigar and tobacco leaves were dried at 80 ℃ for 13 hours, accurately weighed 1.4 and 1.7 g of the above dried tobacco in two beakers, were added 10 ml of concentrated nitric acid and 4 ml of high concentration