铅是一种对人体有害的金属元素,铅的使用范围很广,与人类生活密切相关,人处在铅化物的包围之中。有些儿童玩具含铅,油漆有铅,汽油也有铅。食物极易受铅的污染,如用含铅锡壶煮酒,用含铅盖的谷物膨化机加工食品,含铅皮蛋,中药密碳仙含铅等。从事铅作业的人受影响就更大。铅中毒早期常有乏力、肢体酸痛、食欲不振、腹胀、便秘、腹部隐痛及轻度神经衰弱,重症可表现为牙龈铅线、多发性神经炎、贫血,甚至出现 Lead is a metal element that is harmful to the human body. Lead has a wide range of uses and is closely related to human life. People are surrounded by lead compounds. Some children’s toys contain lead, paint lead, gasoline also lead. Food is highly susceptible to lead pollution, such as cooking tin with tin pots, processed food products with lead-covered cereal puffing machines, lead preserved eggs, and traditional Chinese medicine. People engaged in lead operations are even more affected. Early lead poisoning often fatigue, limb pain, loss of appetite, bloating, constipation, abdominal pain and mild neurasthenia, severe symptoms can be manifested as gingival lead, polyneuritis, anemia, and even