A novel approach for monitoring of cyanobacterial toxins: development and evaluation of the passive sampler for microcystins |
| |
Authors: | Ji?í Kohoutek Pavel Babica Luděk Bláha Blahoslav Mar?álek |
| |
Institution: | (1) Centre for Cyanobacteria and Their Toxins, Institute of Botany, The Academy of Sciences of the Czech Republic & RECETOX, Masaryk University, Kamenice 126/3, 62500 Brno, Czech Republic |
| |
Abstract: | We have investigated the ability of an integrative sampler for polar organic chemicals to sequestrate a group of common and
highly hazardous cyanobacterial toxins—microcystins. In a pilot experiment, commercially available passive samplers were shown
to effectively accumulate microcystins after 7 days’ exposure in the field. To find the most efficient configuration for sequestration
of microcystins, four different porous membranes (polycarbonate, polyester, polyethersulfone and nylon) and two sorbents (Oasis
HLB and Bondesil-LMS) were evaluated in the laboratory experiments, where samplers of different configuration were exposed
to microcystins (microcystin-RR and microcystin-LR) for 14 days under steady conditions. We observed differences in sampling
rates and amounts of accumulated microcystins depending on the sampler configurations. The samplers constructed with the polycarbonate
membrane and Oasis HLB sorbent (2.75 mg/cm2) provided the highest sampling rates (0.022 L/day for microcystin-RR and 0.017 L/day for microcystin-LR). To the best of
our knowledge, the present study is the first reporting application of passive samplers for microcystins, and our results
demonstrate the suitability of this tool for monitoring cyanotoxins in water. |
| |
Keywords: | Passive sampling Cyanobacteria Microcystin |
本文献已被 PubMed SpringerLink 等数据库收录! |
|