Detection of per- and polyfluoroalkyl substances in biosolids from wastewater treatment plants

Kang, Xiaoxi

Permalink

https://hdl.handle.net/2142/105069 Copy

Description

Title

Detection of per- and polyfluoroalkyl substances in biosolids from wastewater treatment plants

Author(s)

Kang, Xiaoxi

Issue Date

2019-04-25

Director of Research (if dissertation) or Advisor (if thesis)

Men, Yujie

Department of Study

Civil & Environmental Eng

Discipline

Environ Engr in Civil Engr

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(s)

PFASs, Biosolids

Abstract

Per- and polyfluoroalkyl substances (PFASs), with unique and special surfactant activities and chemical properties, are widely used in a variety of industrial and consumer products. The worldwide distribution and ubiquitous presence of these substances has aroused research interests and concerns all over the world. Wastewater treatment plants (WWTPs) have been considered as an important precipitates and sources of PFASs compounds in the environment. In this study, a method was developed to detect PFASs in biosolids using high-performance liquid chromatography (HPLC) system coupled with high-resolution mass spectrometer (HRMS). A solid phase extraction (SPE) procedure was applied to extract the PFAS analytes from biosolid samples collected from two local wastewater treatment plants (WWTPs). The SPE procedure under basic conditions showed effective extraction for ionic analytes, with recoveries of 85.62 % and 114.65 % for PFOA and PFOS, respectively. The acidic SPE extraction showed relatively low recoveries for zwitterionic and ionic analytes. Totally 30 analytes were detected in two biosolid samples. PFOS were the predominant PFASs, with concentrations from 27.04 ng/g to 73.03 ng/g dry weight.

Graduation Semester

2019-05

Type of Resource

text

Permalink

http://hdl.handle.net/2142/105069

Copyright and License Information

Copyright 2019 Xiaoxi Kang

Owning Collections