Effects of suspended sediment on POCIS sampling rates

Djomte, Valerie Toteu; Chen, Sunmao; Chambliss, C. Kevin

doi:10.1016/j.chemosphere.2019.124972

Cited by 17 publications

(7 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Uptake of thiacloprid in Chemcatcher ® was unaffected by fouling on the DM, but fouling on naked disks suppressed uptake, potentially due to interference with the sorbent moieties, impeding analyte uptake and/or recovery [99]. Djomte et al [108] induced heavy fouling on POCIS through addition of suspended sediments (3600 ppm) to deionised water to compare uptake of 12 polar pesticides in PES and Oasis™ HLB of fouled and unfouled devices exposed for 10 days.…”

Section: I) Flowmentioning

confidence: 99%

“…Other field applications have focused on passive sampling within the context of regulatory monitoring [11,32,120], and to optimise strategies to characterise pesticide flux and identify analytes originating from episodic or continuous sources within passive sampling data [35,116]. A significant portion of the literature for each PSD concerns calibration and performance, including the influence of ambient conditions on uptake [103,108,121]. Approaches to data quality and assurance have included development and evaluation of methods for PRC correction [52,61,123] and discussion of challenges of the PRC approach [51], use of passive flow monitors (PFMs) [106] and modelled analyte uptake [23,124,125].…”

Section: Applications Of Passive Sampling For Polar Pesticidesmentioning

confidence: 99%

See 1 more Smart Citation

Trends in the use of passive sampling for monitoring polar pesticides in water

Taylor

Fones

Mills

2020

Trends in Environmental Analytical Chemistry

View full text Add to dashboard Cite

The presence of polar pesticides in environmental waters is a growing problem. After application their migration into the aqueous phase is promoted by their high water solubility. Transport processes are usually complex and inputs are generally stochastic; this makes monitoring of this class of pesticides challenging using low volume spot samples of water. Recently there has been a trend to use passive samplers to monitor pesticides in river catchments as it is an in-situ time integrative sampling technique. The three main types of device used for this purpose are, Chemcatcher ® , POCIS and o-DGT. This article reviews the fate and current state-of-the-art for monitoring polar pesticides in aqueous matrices. Principles and the theory of passive sampling and strategies for passive sampler design and operation are presented. Advances in the application of passive sampling devices for measuring polar pesticides are extensively critiqued; future trends in their use are also discussed.

show abstract

Section: I) Flowmentioning

confidence: 99%

Section: Applications Of Passive Sampling For Polar Pesticidesmentioning

confidence: 99%

Trends in the use of passive sampling for monitoring polar pesticides in water

Taylor

Fones

Mills

2020

Trends in Environmental Analytical Chemistry

View full text Add to dashboard Cite

show abstract

“…57 Moreover, a combined R s value for both the PES membrane and sorbent may be needed to improve the sensitivity of R s estimations; however, this practice can greatly complicate the matrix by co-extracting interferences from the PES, which would have to be extracted along with the sorbent. 58 Therefore, both the protection and uncertainty provided by the application of external filter membranes should be considered when developing and evaluating passive samplers. 19 As for some heavily polluted wastewaters, the application of filter membranes should be effective to a certain extent.…”

Section: Resultsmentioning

confidence: 99%

Effects of biofouling on the uptake of perfluorinated alkyl acids by organic-diffusive gradients in thin films passive samplers

Challis

et al. 2022

Environ. Sci.: Processes Impacts

View full text Add to dashboard Cite

show abstract

“…The results showed that the PES possessed strong sorption for some compounds, owing to its molecular structure with phenyl and sulfonate groups, whereas the sorption of those compounds on the PTFE was generally weak and their mass transfer was controlled by the WBL and the diffusion in membrane pore. Several sorption mechanisms, for instance, π-π cloud, electrostatic, van der Waals' force (VDW), and hydrogen bonding, controlled the behavior of these compounds on both the membrane and internal surface of sorbent [107,108].…”

Section: Membrane Propertiesmentioning

confidence: 99%

Sampling Rate of Polar Organic Chemical Integrative Sampler (POCIS): Influence Factors and Calibration Methods

Wang

Liu

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

As a passive sampling device, the polar organic chemical integrative sampler (POCIS) has the characteristics of simple operation, safety, and reliability for assessing the occurrence and risk of persistent and emerging trace organic pollutants. The POCIS, allowing for the determination of time-weighted average (TWA) concentration of polar organic chemicals, exhibits good application prospects in aquatic environments. Before deploying the device in water, the sampling rate (Rs), which is a key parameter for characterizing pollutant enrichment, should be determined and calibrated accurately. However, the Rs values strongly depend on experimental hydrodynamic conditions. This paper provides an overview of the current situation of the POCIS for environmental monitoring of organic pollutants in an aquatic system. The principle and theory of the POCIS are outlined. In particular, the effect factors such as the ambient conditions, pollutant properties, and device features on the Rs are analyzed in detail from aspects of impact dependence and mechanisms. The calibration methods of the Rs under laboratory and in situ conditions are summarized. This review offers supplementary information on comprehensive understanding of mechanism and application of the POCIS. Nevertheless, the Rs were impacted by a combined effect of solute–sorbent–membrane–solution, and the influence extent of each variable was still unclear. On this basis, the ongoing challenges are proposed for the future application of the POCIS in the actual environment, for instance, the need for this device to be improved in terms of quantitative methods for more accurate measurement of the Rs.

show abstract

Effects of suspended sediment on POCIS sampling rates

Cited by 17 publications

References 23 publications

Trends in the use of passive sampling for monitoring polar pesticides in water

Trends in the use of passive sampling for monitoring polar pesticides in water

Effects of biofouling on the uptake of perfluorinated alkyl acids by organic-diffusive gradients in thin films passive samplers

Sampling Rate of Polar Organic Chemical Integrative Sampler (POCIS): Influence Factors and Calibration Methods

Contact Info

Product

Resources

About