塑料充斥在人类的生活里,在日常生活中被大量使用。因为很多塑料制品都是一次性的,所以塑料形成的生活垃圾可谓惊人。因为塑料的用量大,难降解或降解后产生有毒物质,让塑料垃圾的处理成为令人头疼的大难题,现在很多城市都已经面临塑料围城的困境。
潜水员JacekDybowski来到兄弟岛附近的红海海域潜游,发现了令人心痛的一幕,这头白鳍鲨的脖子上套着一个塑料环,塑料的边缘嵌进它的肉里,勒出了了一道深深的伤痕,看上去十分痛苦。
我们常常能看到海洋生物吞下五颜六色的塑料后惨死的例子,真是令人心痛!人类自然不会主动去吃塑料,不过科学家已经在鱼类的身体里,还有海盐和自来水中,发现了塑料乃至微塑料广泛存在的痕迹,通过食物链人类正不知不觉中将塑料吃到了肚子里。
那么,我们怎么样才能好好的利用塑料“垃圾”呢?这少不了科学家们的努力专研。
然而,塑料制品对温度极其敏感,且加热后会变形、变性,只有在超低温环境下,才能保证样品的完整性。在样品前处理这块着实让科研工作者头疼,因为常规的仪器根本搞不定它。
上海净信浸入式液氮冷冻研磨仪(JXFSTPRP-MiniCL),却完全可以做到!
浸入式液氮冷冻研磨仪
石油化工科学院老师就用净信这款仪器完成了塑料袋研磨。
这款仪器体积小方便携带,拥有三项专利,真正的液氮冷冻,全程-196度低温下研磨粉碎。保持了生物物质活性,确保易挥发物质的保留;防止热不稳定化合物的受热降解,对热和机械压力敏感的代谢物、异构体和复杂化合物保持原有的敏感特性物质。传统需要五分钟的粉碎研磨,而本设备只需要三十秒,称得上是研磨界的终极手段!
实验材料和器具:
样品:塑料袋
仪器:净信浸入式液氮冷冻研磨仪(JXFSTPRP-MiniCL)
配件:不锈钢研磨罐、液氮保温桶、液氮
实验步骤:
1.将破碎成小块的塑料袋碎片放入研磨罐内
2.研磨罐放入仪器
3.设定好参数(先预冷若干分钟)
4.将仪器放入液氮保温桶内,启动程序
5.待程序运行结束即可得到研磨后的样品
研磨对比图:
医疗、法医、考古等领域,对坚硬的牙齿,韧性很大的头发、皮肤组织、结蹄组织等,净信浸入式液氮冷冻研磨仪能在使基因、蛋白等生物信息不分解、不降解的情况下,将样品研磨成粉末;监督检测行业,挥发性物质检测是难点,只有保证在液氮的温度下的样品破碎,才能确保有机物检测的准确性更强。除此以外,在农业、生物技术、电子产品、地矿等行业的顶级实验室,在做研究的时候,都需要液氮冷冻研磨仪的帮助。而这些您只需一台净信浸入式液氮冷冻研磨仪即可搞定!
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