砷
砷，舊譯砒，化學元素也，符號為As，原子序三十三，位列主族。分有灰砷、黑砷、黃砷三種。用諸工業者，獨灰砷而已。
冶銅並得砷。同位素計有三十三，自砷六十至砷九二。性穩者獨砷七十五而已。
砷重而脆，有毒，無論元素、化合物、有機物，皆然。劇毒砒霜，亦砷化合物也，學名三氧化二砷，作農藥，滅害蟲。進食以前，須盡清洗，以除其存。
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譯名見異，臺譯在先，陸譯在後，香港兼從
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