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Guide to the identification of microplastics by FTIR and ...
assets.thermofisher.comde facto techniques to identify microplastics. This note provides an overview of FTIR and Raman techniques as applied to the identification of microplastics. Microplastics – common materials A microplastic is a small piece of plastic that is <5 mm in size.1 A list of common polymers found in microplastics is provided in Table 1.
How to Choose the Level of Significance: A Pedagogical …
mpra.ub.uni-muenchen.de3 nX n X Z 0.5 2/ , where X is the sample mean. At the 5% level of significance, H0 is rejected if Z is greater than the critical value of 1.645 or X is greater than 2(1. 645 )/ n.Note that the Z statistic is an increasing function of sample size or the critical value for X is a …