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买菜用蓝光笔检测农残?不靠谱!荧光物质的多少其实与果蔬新鲜 ...
“只需蓝光笔、紫外光笔,对蔬菜轻轻一照,如果表面出现蓝光,就意味着可能存在较多的农药残留”。往下看,一起来了解↓荧光物质的多少与果蔬的新鲜程度有关蓝光笔或紫外光笔通过发射特定波长的蓝光来检测蔬菜表面的荧光反应,这种方法并不能准确判断蔬菜是否含有农药残 ...
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