Passive Sampling

 Passive sampling enables the monitoring of contaminants (micropollutants or biotoxins) in water (surface water, groundwater, coastal water...) for a short (at least 7 days) to long period (with an average field deployment of one month) for which no power, maintenance and supervision is required. An average of the concentration of collected contaminants is measured in the laboratory.

We offer a large range of passive samplers to collect very wide families of natural or synthetic molecules.

Passive samplers                                               

- The Polar Organic Chemical Integrative Sampler (POCIS) is designed to provide the time weighted average (TWA) concentration of hydrophilic organic chemicals (pesticides, drug residues, EDCs…) during the sampling period. More recently, University of  Bordeaux (EPOC) has also designed a POCIS for the uptake of perfluorinated compounds.

- Chemcatchers are designed to provide TWA concentration of polar or non polar organic compounds as well as metals during the sampling period. 

- Solid phase adsorption toxin tracking (SPATT) is a new monitoring tool that simulates the biotoxin contamination of filter feeding bivalves.

Each passive sampler contains a sorbent (AttractSPE®disks or powder) to collect the contaminant in water. The Organic chemicals, metals and biotoxins are then  extracted from the sorbent following a SPE or disks SPE procedure and analyzed using classical analytical methods by HPLC, and LC-MS, .... 

POCIS TO ANALYSIS

 

 

 

 

 

 

Figure: steps from POCIS to analysis

Advantages of POCIS, SPATT and chemcatchers

- Can generate a time-weighted average (TWA) concentration of the contaminants in water

- Deployable in harsh conditions

- No a priori preparation or supervision

AFFINISEP provides a complete range of sorbents  for the retention of specific molecules or a family of contaminant for Pharmaceutical, Pesticides, Herbicides, Endocrine disruptors, perfluorinated compounds, Biotoxins, metals... as well as all necessary accessories such as holder, canister, manifold, ....

 

 

Picture of POCIS                  Picture of Chemcatcher             Picture of AttractSPE® SPATT Biotoxins

 

POCIS                  Chemcatcher transparent             SPATT Biotoxins

 

Please contact us if you need more information. contact@affinisep.com

 

POCIS

POCIS

For the uptake of a wide range of organic molecules including glyphosate and perfluorinated compounds


see family
SPATT Biotoxins

AttractSPE®SPATT BIOTOXINS

For the uptake of biotoxins from microalgaes


see family

Top of the page