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吸甲醛的竹炭包也有“保质期” 使用后要多晒晒太阳

 

    刚装修好的屋子、新买来的车,里面总是充斥着一股难闻的气味,其中多数是甲醛等有害气体。为了清除甲醛,我们经常会买来一些竹炭包,放在屋里、车上。不过,网上却有人说,竹炭吸附满甲醛后会重新释放有害物质,反而变成污染源。这个说法到底是不是真的呢?

    竹炭包会释放甲醛?

    实验告诉你真相

    最近,清华大学建筑环境检测中心的人员对竹炭包进行了检测实验,实验是通过吸附材料性能测试平台,来测定竹炭吸附材料对甲醛污染物的吸附性能。

    检测人员使用了一种可以产生一定浓度甲醛污染物的特殊装置,通过软管让甲醛进入到装有竹炭的U形管中。同时,通过专业仪器来监控U形管进气口和出气口气体的甲醛浓度。6小时后,U形管中的竹炭吸附甲醛达到了饱和,其结果显示活性炭的吸附能力是每100克活性炭可以吸附大概910毫克的甲醛。

    那么,吸附了甲醛的竹炭包,真的会将甲醛再释放出来吗?检测人员又准备了一个干净的30升环境测试舱,里面空气中甲醛的含量为零。然后将吸附过甲醛污染物的竹炭材料放进舱中,经过24小时后,舱里的甲醛浓度显示达到0.03毫克每立方米。因此,从实验结果来看,吸附了甲醛的竹炭,真的会释放甲醛。

    专家表示,吸附在竹炭里的甲醛其实并不稳定,随时都有可能从竹炭里面跑出来。

    用过的竹炭包要多晒晒太阳

    你会用竹炭包清除甲醛吗?家中的竹炭包,你已经用了多久?昨天,记者采访了几位市民和读者,他们中的不少人表示,会在新房、新车里放置竹炭包除味。但是,对于竹炭包能使用多久、吸满有害气体后会不会释放出来,多数人并不清楚。

    “不看不知道,一看吓一跳,以前化学课上只知道竹炭有吸附作用,没想到还会释放。”市民邓先生告诉记者,两年前买了新车后,自己就在车里放了五六个竹炭包,一直用到现在。“估计早就吸饱了甲醛,开始释放了吧……”

    读者“小陈是块砖”表示,之前一直以为竹炭包可以“一包用到天荒地老”,“没想到竹炭包也是有‘有效期’的!”读者“独酌青苔”则表示自家新房刚装修完毕,前阵子刚买了一箱竹炭包放置在新房里。“刚才翻了一下说明书,才发现上面写着竹炭包用一段时间后要放到太阳下晒,然后再使用。”

    给竹炭包晒晒太阳真的能重新提升其吸附有害气体的效果?专家表示,在夏日高温的情况下,竹炭吸附甲醛的能力有明显下降,而释放甲醛的速度却会有很大提高。因此,给使用一段时间的竹炭包晒晒太阳,或者拿到通风比较好的地方用电吹风吹一下,确实可以让竹炭包里的活性炭“再生”,恢复其吸附能力。

    此外,专家还提醒,甲醛分子在高温的时候活动能力比较强,所以就容易摆脱活性炭的吸附跑出来,低温的时候活性炭吸附甲醛的能力强,而高温的时候相对较弱。因此,使用竹炭时要避免放在温度过高的地方,以免降低它的吸附作用。

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target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank>甲醛</a></a></a></a></a></a></a></a></a></a></a></a>治理 新车除异味 除<a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank>甲醛</a></a></a></a></a></a></a></a></a></a></a></a>最有效方法  除<a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank><a data-cke-saved-href=http://www.green-happy.com href=http://www.green-happy.com target=_blank>甲醛</a></a></a></a></a></a></a></a></a></a></a></a>公司格瑞乐 订阅号

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