塑料充斥在人類的生活里,在日常生活中被大量使用。因?yàn)楹芏嗨芰现破范际且淮涡缘模运芰闲纬傻纳罾芍^驚人。因?yàn)樗芰系挠昧看螅y降解或降解后產(chǎn)生有毒物質(zhì),讓塑料垃圾的處理成為令人頭疼的大難題,現(xiàn)在很多城市都已經(jīng)面臨塑料圍城的困境。
潛水員JacekDybowski來到兄弟島附近的紅海海域潛游,發(fā)現(xiàn)了令人心痛的一幕,這頭白鰭鯊的脖子上套著一個(gè)塑料環(huán),塑料的邊緣嵌進(jìn)它的肉里,勒出了了一道深深的傷痕,看上去十分痛苦。
我們常常能看到海洋生物吞下五顏六色的塑料后慘死的例子,真是令人心痛!人類自然不會主動去吃塑料,不過科學(xué)家已經(jīng)在魚類的身體里,還有海鹽和自來水中,發(fā)現(xiàn)了塑料乃至微塑料廣泛存在的痕跡,通過食物鏈人類正不知不覺中將塑料吃到了肚子里。
那么,我們怎么樣才能好好的利用塑料“垃圾”呢?這少不了科學(xué)家們的努力專研。
然而,塑料制品對溫度極其敏感,且加熱后會變形、變性,只有在超低溫環(huán)境下,才能保證樣品的完整性。在樣品前處理這塊著實(shí)讓科研工作者頭疼,因?yàn)槌R?guī)的儀器根本搞不定它。
上海凈信浸入式液氮冷凍研磨儀(JXFSTPRP-MiniCL),卻完全可以做到!
浸入式液氮冷凍研磨儀
石油化工科學(xué)院老師就用凈信這款儀器完成了塑料袋研磨。
這款儀器體積小方便攜帶,擁有三項(xiàng)專利,真正的液氮冷凍,全程-196度低溫下研磨粉碎。保持了生物物質(zhì)活性,確保易揮發(fā)物質(zhì)的保留;防止熱不穩(wěn)定化合物的受熱降解,對熱和機(jī)械壓力敏感的代謝物、異構(gòu)體和復(fù)雜化合物保持原有的敏感特性物質(zhì)。傳統(tǒng)需要五分鐘的粉碎研磨,而本設(shè)備只需要三十秒,稱得上是研磨界的終極手段!
實(shí)驗(yàn)材料和器具:
樣品:塑料袋
儀器:凈信浸入式液氮冷凍研磨儀(JXFSTPRP-MiniCL)
配件:不銹鋼研磨罐、液氮保溫桶、液氮
實(shí)驗(yàn)步驟:
1.將破碎成小塊的塑料袋碎片放入研磨罐內(nèi)
2.研磨罐放入儀器
3.設(shè)定好參數(shù)(先預(yù)冷若干分鐘)
4.將儀器放入液氮保溫桶內(nèi),啟動程序
5.待程序運(yùn)行結(jié)束即可得到研磨后的樣品
研磨對比圖:
醫(yī)療、法醫(yī)、考古等領(lǐng)域,對堅(jiān)硬的牙齒,韌性很大的頭發(fā)、皮膚組織、結(jié)蹄組織等,凈信浸入式液氮冷凍研磨儀能在使基因、蛋白等生物信息不分解、不降解的情況下,將樣品研磨成粉末;監(jiān)督檢測行業(yè),揮發(fā)性物質(zhì)檢測是難點(diǎn),只有保證在液氮的溫度下的樣品破碎,才能確保有機(jī)物檢測的準(zhǔn)確性更強(qiáng)。除此以外,在農(nóng)業(yè)、生物技術(shù)、電子產(chǎn)品、地礦等行業(yè)的頂級實(shí)驗(yàn)室,在做研究的時(shí)候,都需要液氮冷凍研磨儀的幫助。而這些您只需一臺凈信浸入式液氮冷凍研磨儀即可搞定!
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