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生物颗粒的降解功能有没有实质的规范?

生物颗粒的降解功能有没有实质的规范?

来源网址:https://www.swjjkl.com/ 2021-04-23 16:00:30    

生物降解颗粒的降解功能,对生物降解颗粒的降解功能的测验目前还没有制订一致的规范,可采用包括被美国颗粒试验规范(ASTM)采用或预备采用的办法作为规范的办法,通过生物化学和微生物的试验手法来评价的首要办法有下列几种。土埋法,土埋法有室外土埋法和室内土埋法两种,其微生物源首要是土壤中的微生物群,经必定时刻后,取出试样测定其失重、机械功能改变,或用电子显微镜确定其被土壤中微生物侵袭的状况。

Biodegradation function of biodegradable particles. At present, there is no consistent standard for the test of biodegradation function of biodegradable particles. The methods adopted or to be adopted by the American particle test specification (ASTM) can be used as the standard method. The primary methods for evaluation through biochemical and microbiological test methods are as follows. Soil burying method: there are two kinds of soil burying methods: outdoor soil burying method and indoor soil burying method. The microbial source is mainly the microbial community in the soil. After a certain time, take out the sample to determine its weight loss, mechanical function change, or use the electron microscope to determine its invasion by the microorganisms in the soil.
长处是能反映出自然环境条件下的生物分解功能;缺陷是试验周期长,试验成果因土质不同而不同,重复性差。陪替氏培育器定量法在容器中加入试验样品和营养琼脂,接种微生物进行培育,经必定时刻后,剖析试样的失重状况以及某些物理改变或化学改变。长处是可快速降解,在短时刻内获得试验成果,重复性好,定量性好;缺陷是不能反映自然界中的实际状况。
The advantage is that it can reflect the function of biological decomposition in natural environment; The defect is that the test cycle is long, the test results are different due to different soil properties, and the repeatability is poor. In the quantitative method of Petri dish incubator, the test sample and nutrient agar were added into the container and inoculated with microorganisms for cultivation. After a certain period of time, the weight loss and some physical or chemical changes of the sample were analyzed. The advantage is that it can be degraded rapidly, and the test results can be obtained in a short time, with good repeatability and good quantification; Defects can not reflect the actual situation in nature.
酶分析法在容器中加入缓冲液和试验样品,让酶作用必定的时刻后,剖析试样的失重状况,目测霉菌的成长状况,显微镜剖析试样物理功能或化学功能的改变。长处是试验周期短,重复性好,定量性好;缺陷是不能反映自然界中的实际状况。
After adding buffer solution and test sample into the container for enzyme action for a certain time, analyze the weight loss of sample, visually observe the growth of mold, and analyze the change of physical or chemical function of sample under microscope. The advantages are short test period, good repeatability and good quantification; Defects can not reflect the actual situation in nature.
放射性C14示踪法用C14符号聚合物产品,在微生物的作用下发生CO2,用碱性溶液吸收,用滴定法测出CO2总量,再用放射性衰减率法测定C14的CO2量,用C14的CO2占产生的CO2的百分数表明微生物腐蚀的程度。长处是试验成果可靠、清晰。生物降解功能的测验可以检测样品生物降解功能的好坏。
The radioactive C14 tracer method uses C14 symbol polymer products to produce CO2 under the action of microorganisms, which is absorbed by alkaline solution. The total amount of CO2 is measured by titration method, and then the amount of CO2 in C14 is measured by radioactive decay rate method. The percentage of CO2 in C14 is used to indicate the degree of microbial corrosion. The advantage is that the test results are reliable and clear. The test of biodegradation function can detect the biodegradation function of samples.