Automated preconcentration water sampler

Uza M, Hunsinger R, Thompson T, et al. 1990. Validation studies of an automated preconcentration water sampler APS for chlorinated dibenzo-p-dioxins and dibenzofurans. Chemosphere 20 1349-1354. 

The choice of the system to be used for collecting particulate matter depends on the water volume to be sampled and the expected particle concentration therein. Borosilicate glass microfiber filters proved to be appropriate to separate the suspended material from the aqueous solution for a sample size up to 300 L [14]. A limiting factor may be represented by filter plugging, as demonstrated in a validation study conducted by Uza and coworkers to test the efficiency of an automated preconcentration water sampler (APS) for PCDDs and PCDFs [21]. The APS system is composed of a two-stage particulate filtering unit with coarse and fine filters, and an Amberlite XAD-2 resin column to trap dissolved hydrophobic compoimds. Various filter combinations were tested and, in all runs, filter plugging was observed. 

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See also in sourсe #XX -- [ ]

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