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CN1825086B 第四纪沉积物中的孢粉的无乙酸酐的醋解分析方法 失效 - 权利终止

第四纪沉积物中的孢粉的无乙酸酐的醋解分析方法
摘要：
第四纪沉积物中的孢粉的无乙酸酐的醋解分析方法，样品前处理：样品用稀盐酸、氢氟酸去除碳酸盐岩和硅质，再用浓盐酸加热，过滤集中；离心脱水；无乙酸酐的醋解法溶液的配制：冰醋酸与硫酸的质量比是，冰醋酸75～85％，硫酸15～25％；将醋解法溶液加入样品中，搅拌，加热，样品与醋解法溶液的质量比为1∶2～3；将冷却后的样品加水稀释，离心，将酸液倒掉，再加水稀释并离心，反复2-3次，去除酸液；将样品中加少量水，在超声波清洗机中清洗，再过筛；将过筛得到的样品，集中再次离心脱水后制片保存。优化方案冰醋酸与硫酸的质量比为，80％∶20％。本发明克服了使用危险药品乙酸酐的弊病，方便了实验室的操作和药品的管理。
摘要（英）：

The invention relates to acetolysis analysis method without acetic anhydride for spore and pollen in the Quaternary Period sediment. It includes the following steps: taking sample preprocessing: removing carbonate rock and silica by dilute hydrochloric acid and hydrofluoric acid, heating by thick hydrochloric acid, filtering; centrifugal dewatering; making solution of acetolysis analysis method without acetic anhydride from 75-85% glacial acetic acid, 15-25% vitriol; adding the solution into sample, whisking, heating, and the ratio is 1:2-3; adding water into the sample after cooling, centrifuging, pouring out the acid solution, adding water and taking centrifugation repeating for 2-3 times to remove acid liquid, adding little water into sample, washing in the ultrasonic wave cleaning machine, sieving, and taking centrifugation and storing. The optimized method the weight ratio of glacial acetic acid and vitriol is 80%: 20%. It is convenience to operate in lab.

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