By K. Clive Thompson, Paul Nathanail
Reference at the chemical research of doubtless infected land. Addresses all features of the research, from supply of the samples to the laboratory to the presentation of the consequences to the consumers. For practitioners.
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Extra resources for Chemical Analysis of Contaminated Land (Sheffield Analytical Chemistry)
A known volume and concentration of aqueous contaminant (adsorbate) is added to a known mass of soil in a sealed container. The sample is shaken for a pre-determined equilibration time at a constant temperature. The soil is separated from the adsorbate and the remaining concentration of contaminant in the adsorbate is determined. Control samples of the contaminant with no soil present are also set up and analysed to allow for any degradation of the aqueous contaminant with time. There are also a number of much more elaborate methods for carrying out this measurement.
This is not an easy task and can raise practical problems that need to be addressed. Secondly, before a method is used routinely to generate results within a laboratory, it must be fully validated in the laboratory where it is used. In addition to these considerations and practical difficulties, the method must be suitable for the particular determinand, analyte or parameter being analysed, and this includes the concentration range and level of interest. Thus, the laboratory should demonstrate that the method is suitable and fit for purpose.
Pesticide analysis). With soil, the situation is further complicated and exacerbated because of the varied nature of the matrix and by the fact that in most circumstances the definition of soil is not, and indeed cannot be, clearly and unambiguously stated. Depending upon the natural composition of the sample and its level of contamination, each sample removed from an individual site can be regarded as being different from other samples, either from the same site but from different locations within the site, or from different sites.