Application Notes: Environmental
Chromate in Toys, Leather, and Potable Water
July 1st 2015Generally speaking, chromate - Cr(VI) - is classified as allergenic, carcinogenic, and extremely toxic and is subject to strict monitoring. Cr(VI) can occur in various concentrations in different areas, for example, drinking water, toys, or textile and leather products. Metrohm has developed ion chromatographic determination methods for determining Cr(VI) in various concentration ranges (ng/L to mg/L) with inline sample preparation techniques for various matrices. The method can be almost entirely automated. In the following application note, we present the analysis of hexavalent chromium in toys, leather, and drinking water.
Improving Productivity and Reducing Costs with Off-line Sorbent Tube Conditioning
July 1st 2015Rigorous conditioning of sorbent tubes is an essential part of any sampling and analysis protocol. This application note will explore the cost savings and productivity enhancements that can be made by off-line conditioning, rather than on‑line with the thermal desorber itself. In particular, we will focus on the revenue resulting from running more analytical samples, the cost-effectiveness of increasing sample capacity by this approach, and the benefits that stem from using nitrogen rather than helium.
Analysis of Organochlorine Pesticides (OCPs) on SGE BP5MS
July 1st 2015Used extensively from the 1940s through the 1960s, organochlorine pesticides are chlorinated hydrocarbons used in agriculture and mosquito control. The organochlorine pesticides accumulate in the environment, presenting an ongoing issue with adsorption and accumulation in the population as a result of ingestion.
Automated Extraction of Organochlorine Pesticides with In-Line Florisil Cleanup
February 1st 2015Organochlorine pesticides are among the more notorious organic pollutants. Gaining wide spread attention into the latter part of the 20th century, and ultimately leading to their ban, OCPs remain with us as a legacy contaminant in the environment.
Hexavalent Chromium Determination Hamilton PRP-X100 Anion Exchange HPLC Column
February 1st 2014Chromium (Cr) is a metal with an interesting relationship to the environment. Whereas trivalent chromium (Cr(III)) is an essential nutrient, hexavalent chromium (Cr(VI)) is a poison to humans and aquatic life and poses serious environmental and ecological threats.
The Automated Extraction of Aqueous Samples by Method EPA 8270D Using the TurboTrace ABN SPE System
February 1st 2014EPA 8270D calls for the extraction for analysis of semi-volatile analytes in various matrices. Target analytes mentioned in the method cover a wide range of compound classes resulting in reporting lists that often approach 100 compounds.