Passive Sampling Techniques Episode 7 pdf

... 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

... k e (day –1 )C W (ng L À1 ) HCB 1 13 79 2 0.085 0.14 g-HCH 1.8 1695 27 0.130 182 p,p 0 -DDE o1 132 8 0.069 0.03 PCB 28 1 16 62 7 0. 077 0.05 PCB 52 o1 43 6 0. 072 0.02 PCB 101 o1 27 12 0.065 0.004 PCB 138 ... 11 0.1 07 2.16 Acenaphthene 10 10 1 172 3 0.102 12.2 Fluorene 18 9 1128 4 0.100 9 .76 Anthracene 8 30 1494 9 0.094 7. 03 Phenanthrene 62 30 3128 7 0.094 15.4 Fluoranthene 13 30...

Ngày tải lên: 12/08/2014, 16:21

... microextraction and its application in passive sampling Yong Chen and Janusz Pawliszyn 1.1 INTRODUCTION Solid phase microextraction (SPME) was developed to address the need for rapid sampling/ sample preparation, ... 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 sam...

Ngày tải lên: 12/08/2014, 16:21

... 0.1 07 À3 .77 0.99 379 PCB 28 109 5.9 0.060 À0 .73 0. 97 548 0.058 À0.15 0.98 5 37 PCB 52 171 3.6 0.208 À14.5 0.98 1216 0.091 À5 .75 0.99 532 FLU 37 10.4 0.010 À0. 87 0.94 263 0.010 À1.00 0.95 271 MESCO ... 0.98 3468 FLU 16 17. 7 0.001 À0.04 0.98 70 0.048 À1.99 0.96 3006 Sampler B1 Sampler B2 a-HCH 149 3.5 0.068 À1.02 0. 97 454 0. 077 0. 47 0.98 519 g-HCH 269 5.6 0.100 À0.02 0.96 37...

Ngày tải lên: 12/08/2014, 16:21

... o0.005 Mefenamic acid 97 (7. 4) o0.005 o0.005 o0.005 o0.005 o0.005 o0.005 o0.005 o0.005 Propranolol 95 (2.2) 0.36 (3.8) 0.41 (20) 0.68 (36) 0.62 (14) 0 .74 (2.0) 1.1 (7. 1) 1.0 (2.5) 1.3 (7. 3) Sulfamethoxazole ... 1 þ K sw V s V w  R s t K sw V s  1 þ K sw V s V w (7. 39) which reduces to Eq. (7. 12) in the limit V w -N. With Eqs. (7. 38) and (7. 39) it is assumed that there are no...

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 2 67 d 100 (mgL À1 ) 0.3 ... [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

... 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 ... Most complicated and expensive to operate. [13,14,31–34] Techniques for quantitatively evaluating aquatic passive sampling devices 3 37 TABLE 14.2 Examples of field applications...

Ngày tải lên: 12/08/2014, 16:21

... and Speedisks s GF/F 200 50 [38] Mountain lake XAD-2 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 1000 (filter), 250 (column) 65 [45] Seawater XAD-2 ... Francisco Estuary XAD-2 1 1400 250 g and 2 Â 75 g 400 [41] Deep Atlantic XAD-2 GF/F 5 bed volumes [50] Techniques for quantitatively evaluating aquatic passive sampling devic...

Ngày tải lên: 12/08/2014, 16:21

Ngày tải lên: 12/08/2014, 16:21

... Pawliszyn 17. 1 Introduction . . 379 17. 2 PETREX passive soil gas and sediment vapour sampling system . . . . . . 380 17. 3 GORE TM modules for passive soil gas collection . . . 381 17. 4 Emflux s passive ... . . 142 7. 3 Model application to other passive samplers . . . 146 7. 4 Validity of the model assumptions. . . 1 47 7.5 Water boundary layer resistance 149 7. 6 Membra...

Ngày tải lên: 28/03/2014, 18:20