GC‐MS analysis of organic compounds in wastewater and sewage sludge

Abstract

A multimethod based on liquid-liquid extraction and solid-liquid extraction for the analysis of persistent organic pollutants in water and sludge from sewage treatment plants has been established. Traces of 22 organic compounds used in industry and personal care products (PCPs) were analyzed by GC/MS. The LODs for the analytes were less than 2.3 ng/L for wastewater and 31 microg/kg (dry weight matter) for sewage sludge. Satisfactory recoveries (70-130%) were achieved. The validated method permits the analysis of water and sludge samples at various stages of the treatment from different sewage treatment plants. Thus, the distribution between water and sludge as well as the dissipation of the compounds analyzed were balanced. By this means, the efficiency of different wastewater treatment plants (WWTPs) can be evaluated and measures can be taken to optimize the treatment process at different stages.

Exposure of the population of Catalonia (Spain) to musk fragrances through seafood consumption: Risk assessment

“…Although partial elimination in STPs has been reported for nitro as well as for polycyclic musks, little information is available for macrocyclic musks. Moreover, no data have been published for alicyclic musks (Ligon et al, 2008;Lopez-Nogueroles et al, 2013;Vallecillos et al, 2015a). Moreover, some synthetic musks can be transformed in STPs as well as in biota, being transformation products even more problematic than the parent musks , in terms of potential toxicity.…”

Disposal Practices of Unused and Leftover Medicines in the Households of Dhaka Metropolis

“…The hike in usage caused significant issues revolving around accidental poisoning from unfitting use and pharmaceutical loading [3]. Despite being an important matter of concern, the disposal of unused medicines has long been an unspoken issue worldwide [4,5]. About 30 years ago, pharmaceuticals consisting of organic compounds that disturb human health and marine ecosystems were identified in the environment [4,[6][7][8][9][10][11].…”

“…Despite being an important matter of concern, the disposal of unused medicines has long been an unspoken issue worldwide [4,5]. About 30 years ago, pharmaceuticals consisting of organic compounds that disturb human health and marine ecosystems were identified in the environment [4,[6][7][8][9][10][11]. To date, a large number of studies showed the presence of pharmaceuticals in water bodies such as in groundwater [12,13], surface water [8,12], aquatic and coastline environments [13], and recipient water, sludge, and wastewater [14].…”

Evaluation of preconcentration methods in the analysis of synthetic musks in whole‐water samples

“…Other analytical techniques such as stir‐bar sorptive extraction , microextraction by packed sorbents , and membrane‐assisted solvent extraction (MASE) were developed and validated to quantify SMC in filtered or centrifuged water samples. But for a considerably high number of publications using methods presented previously such as membrane‐assisted liquid–liquid extraction , microextraction by packed sorbent , microwave‐assisted headspace solid‐phase microextraction , SPME , dispersive liquid–liquid microextraction , single‐drop microextraction , SPE or even LLE , it is difficult to point out precisely if the samples were filtered or not and if they are, thus, representative of the natural system in study.…”