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在环境保护与职业健康日益受到重视的今天，准确测定空气中的苯系物含量成为了环境监测与工业卫生领域的核心任务之一。基于多年的行业经验，我深知在复杂多变的实际环境中，拥有一套可靠、精准的苯系物测定标准物质对
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中国消费者报北京讯记者任震宇）3月27日，市场监管总局、中国消费者协会发布消费提示，提醒消费者选购可去除花粉过敏原空气净化器时，要注意“过敏原去除率”和“颗粒物洁净空气量”两大指标，不是所有净化器都能