Impact of environmental factors on the sampling rate ofβ-blockers and sulfonamides from water by a carbon nanotube-passive sampler  

作　　者：Klaudia Godlewska Aleksandra Jakubus Piotr Stepnowski Monika Paszkiewicz 

机构地区：[1]Department of Environmental Analysis,Faculty of Chemistry,University of Gdansk,ul.Wita Stwosza 63,Gdansk 80-308,Poland

出　　处：《Journal of Environmental Sciences》2021年第3期413-427,共15页环境科学学报（英文版）

基　　金：Financial support was provided by the National Science center(Poland)under the grant UMO-2019/33/N/ST4/01376。

摘　　要：Passive techniques are a constantly evolving approach to the long-term monitoring of micropollutants,including pharmaceuticals,in the aquatic environment.This paper presents,for the first time,the calibration results of a new CNTs-PSDs(carbon nanotubes used as a sorbent in passive sampling devices)with an examination of the effect of donor phase salinity,water pH and the concentration of dissolved humic acids(DHAs),using both ultrapure and environmental waters.Sampling rates(R_(s))were determined for the developed kinetic samplers.It has been observed that the impact of the examined environmental factors on the R_(s) values strictly depends on the type of the analytes.In the case ofβ-blockers,the only environmental parameter affecting their uptake rate was the salinity of water.A certain relationship was noted,namely the higher the salt concentration in water,the lower the Rs values ofβ-blockers.In the case of sulfonamides,water salinity,water pH 7-9 and DHAs concentration decreased the uptake rate of these compounds by CNTs-PSDs.The determined Rs values differed in particular when the values obtained from the experiments carried out using ultrapure water and environmental waters were compared.The general conclusion is that the calibration of novel CNTs-PSDs should be carried out under physicochemical conditions of the aquatic phase that are similar to the environmental matrix.

关 键 词：Carbon nanotubes Passive sampling Pharmaceuticals Sampling rates(R_s) 

分 类 号：X832[环境科学与工程—环境工程]