‘含铅’ literally means 'contains lead' — 含 (hán) means 'to contain' or 'to hold within,' and 铅 (qiān) is the chemical element 'lead.' Together, they form an adjective describing substances, materials, or products that have detectable or significant levels of lead, a toxic heavy metal. This term is commonly used in public health, environmental safety, and consumer product labeling.

You’ll often see ‘含铅’ in warnings about old paint, contaminated water, certain cosmetics, traditional medicines, or imported toys. It carries a strong connotation of hazard and regulatory concern — unlike neutral terms like 'contains iron,' ‘含铅’ almost always implies a potential health risk, especially for children. The phrase typically modifies nouns directly (e.g., 含铅油漆, 含铅水), and rarely appears in isolation without a noun or context indicating danger or testing.