Passive Sampling Techniques Episode 10 ppsx

... Chapter 15 Techniques for quantitatively evaluating aquatic passive sampling devices B. Scott Stephens and Jochen F. Mu¨ller 15.1 INTRODUCTION As the suite of available devices for passively sampling ... compounds. Most complicated and expensive to operate. [13,14,31–34] Techniques for quantitatively evaluating aquatic passive sampling devices 337 TABLE 14.2 Examples of field app...

Ngày tải lên: 12/08/2014, 16:21

... develop passive air sampling techniques for POPS? 35 2.3 What approaches can be used? . 38 2.4 The choice of sampler designs: features, advantages and potential problems . . 40 2.4.1 Low-capacity sampling: ... been applied successfully to the sampling and analysis of environmental, food, pharmaceutical, and forensic sam- ples [3]. More recently it has been used in passive sampling...

Ngày tải lên: 12/08/2014, 16:21

... devices combining the advantages of passive sampling approaches with solvent-free pre- concentration of organic contaminants from air, water or other matri- ces. The sampling materials are polymer-coated ... fibres and an inner fluid [3]. Independently from the devices designed for passive sampling in water (described in Chapter 10 of this book) two types of MESCOs for the long-term...

Ngày tải lên: 12/08/2014, 16:21

... phase resulted in an increase in sampling rates up to a factor of 6. Decreasing sampling rates were ob- served for the 5-ring PAHs, which showed a decrease in sampling rate by a factor of 2–3 ... a result of their very low K aw values (o3 Â 10 À5 ). The use of 1-octanol as intermediate phase resulted in an approximately 20-fold increase in sampling rates compared with water as inter...

Ngày tải lên: 12/08/2014, 16:21

... spot sampling methods that provide only an instantaneous estimate of the concen- tration of pollutants at the time and point of sampling. Amongst these alternative technologies are passive sampling ... Chapter 9 Monitoring of priority pollutants in water using Chemcatcher passive sampling devices Richard Greenwood, Graham A. Mills, Branislav Vrana, Ian Allan, Rocı ´ o Aguilar-Martı...

Ngày tải lên: 12/08/2014, 16:21

... 0.02 PCB 101 o1 27 12 0.065 0.004 PCB 138 o1 33 5 0.062 0.003 PCB 153 o1 22 9 0.062 0.002 PCB 180 o1 8 10 0.064 0.001 Acenaphthylene 4 45 124 11 0 .107 2.16 Acenaphthene 10 10 1172 3 0 .102 12.2 Fluorene ... Chemistry 48 R. Greenwood, G. Mills and B. Vrana (Editors) Volume 48 ISSN: 0166-526X DOI: 10. 1016/S0166-526X(06)48 010- 7 r 2007 Elsevier B.V. All rights reserved. 231 Chapter 11 I...

Ngày tải lên: 12/08/2014, 16:21

... aqueous concentration Predicted required sampling times 0.1 (mgL À1 ) 330 d e 1.4 a f 9 a 11 a 61 a 73 a 1(mgL À1 ) 33 d 53 d 341 d 1.1 a 6.1 a 7.3 a 10 (mgL À1 ) 3 d 5 d 34 d 41 d 224 d 267 d 100 (mgL À1 ) 0.3 d ... [1,2].DSs can be advantageous for sampling VOCs in ground-water primarily because they have the potential to reduce costs substantially compared with pumping approaches to...

Ngày tải lên: 12/08/2014, 16:21

... five sites. [17] Portsmouth Harbour Empore TM 2 2 10 14 d [33] a Not counting replicates. Techniques for quantitatively evaluating aquatic passive sampling devices 345 TABLE 15.3 High-volume solid-phase ... 1.0 14.2 300 75 g 100 [48] Lake Superior XAD-2 GF/F 29.3 o600 75 g [37] Lake Michican XAD-2 0.7 29.3 100 0 (filter), 250 (column) 65 [45] Seawater XAD-2 and PUF GF/C, 0.5 14.2 100...

Ngày tải lên: 12/08/2014, 16:21

Ngày tải lên: 12/08/2014, 16:21

... vapour sampling system . . . . . . 380 17.3 GORE TM modules for passive soil gas collection . . . 381 17.4 Emflux s passive soil gas sampling system 382 17.5 Semipermeable membrane devices for passive ... FOR PASSIVE SAMPLING THERMAL DESORPTION ANALYSIS There is a number of diffusion sampler designs on the market. For the combination of TD and diffusion sampling the various type...

Ngày tải lên: 28/03/2014, 18:20