Ion Chromatography Analysis of Bromate in Natural Water Samples Using Ammonia as a Preservative
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Ethylenediamine, the preservative specified in EPA Method 300.1, can introduce a chromatographic artifact when analyzing samples containing elevated carbonate concentrations as a result of the formation of ethylenediamine carbamate. This artifact can compromise the ability to measure low levels of bromate in drinking water. The use of ammonia as an alternative preservative was investigated and found to produce improved bromate chromatography under challenging conditions. The improvement was seen on two different stationary phases, demonstrating that the benefit of this alternative preservative is independent of the column chemistry.
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Faster Clostridium Detection in Milk with Raman Spectroscopy
December 23rd 2024Researchers from Italy have developed a Raman spectroscopy-based method for the rapid detection of Clostridium spores in milk. This technique offers significant advantages over traditional methods, reducing detection time by nearly half while maintaining sensitivity and reliability.
Best of the Week: ATR Spectroscopy, Microplastics, Remembering Sir David McMurtry
December 20th 2024Top articles published this week include a news article on attenuated total reflectance (ATR) spectroscopy, a news article about microplastics, and a reflection on the life and career of David McMurtry.
