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上海一新办小学跑道被指有毒 数十名学生流鼻血

2016-10-20 08:15:55   

张副校长明确称,学校认为没有必要再对跑道进行第三次检测,“每次检测,我们都有教育局质管办、施工方、监理方等5方人士现场监督执行,不存在(把检测物)掉包的可能性。”

针对校舍环境问题,张副校长介绍,学校在验收时已按照《民用建筑工程室内环境污染控制规范》中的一类民用建筑标准交付使用,因此不需要另行专门检测。但有家长告诉记者,学校目前除了一年级、四年级共用的那栋楼以外,另外几栋楼仍在装修过程中。

张副校长称,目前大部分学生已经复课,且复课后并没有出现大范围流鼻血的情况。学校也在十一假期期间对跑道进行了冲水清洗等“物理”处理,“现在没什么味道了。刚开学时天气炎热,塑胶跑道遇热容易产生气味”。

他表示,对于少部分尚未复课的学生,校方还会继续“联系沟通”。

一名长期从事塑胶跑道有害物质研究的学者告诉中国青年报·中青在线记者,实际上,符合上海市最新监测标准的塑胶跑道并非就是“安全的”,“上海标准出来后,业界也有不同声音,新标准的检测方法也有一些不妥之处”。

这名学者认为,个别标准的制定,“牵扯”太多;而另一些更应该多检测的东西,却没被纳入进来。

举例来说,上海新标准规定,固体原料中18种多环芳烃总和不得多于50mg/kg,“这种物质存在于废轮胎中,但它对于孩子健康有多大影响,并没有多少实证研究可以证明。定量为50mg/kg,依据是什么?有没有做过研究?到底人体能承受多大的量?”

而另一种可能会对孩子健康产生更多影响的胶水有机溶剂——可溶性铅,上海标准规定原料中可以存在30mg/kg的量,“我还是那句话,它被允许存在30mg/kg的这个量,是怎么得出的?有没有经过实证考察?”

这名学者认为,“毒跑道”检测标准方面,引入气味评定方法的“深圳方案”更全面一些。

深圳标准要求,气味评定小组由5名不吸烟、嗅觉器官无疾病成员组成,在场地施工完成至少14天以后进行气味评价。气味评定一共分为“没味道”“有略微气味”“有不舒服的感觉”“有刺鼻的味道”“特别刺鼻使人受不了”等5个等级,前两个级别没什么问题,第三级就要进行味道处理,到了第四、第五级别就要对跑道进行铲除。

中国塑胶跑道国家标准主要起草人、中国首位塑胶跑道研制专家师永昌之子师建华此前在介绍“深圳方案”时称,目前发现的“毒跑道”主要有3类问题:一是原材料质量不合格,铅、镉、铬等重金属超标;二是部分施工单位为降低施工成本,违规添加含苯溶剂,会排放有毒气体,会刺激黏膜,产生咳嗽、呕吐、头晕等症状,如果是儿童,可能会发生流鼻血的症状;三是厂家在原材料中掺入汽油、丙酮、天拿水等有害于人体的物质。

师建华说,鉴别“毒跑道”最简单的办法是闻,鼻子贴近跑道闻,略有味道是没有问题的,但站着仍能闻到强烈的刺激气味,基本上可判定为“毒跑道”。

(为保护被采访人隐私,文中所有家长、学生均为化名)

责任编辑:周晶晶 CN032
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