Environmental Forensics: Principles and Applications - Chapter 6 ppt

... locations S1-EX3 and S9-EX5 (see 3a) were also omitted. Sample locations located 30 ft to the east (S 5- 5-PL, S 9-7 -PL), however, were projected onto the A-A¢ transect in 3a and incorpo- rated into ... cross-section. In the case of the transect A-A¢ in Figure 6. 3(3b), data along the transect that were not used included locations S-EX7 and S 4- 3-PL. Sampling locations within...

Ngày tải lên: 11/08/2014, 09:21

... 2.0 o-Xylene 2.27 p-Xylene 1.72 m-Xylene 5 .66 2-Butene 0.315 a 2-Pentene 0.435 a Butane 3.83 1,2,4-Trimethylbenzene 3. 26 Pentane 3.11 a Average of cis- and trans ©2000 CRC Press LLC conditions and ... Oil No. 6 Fuel Oil Coarse gravel — 800 160 0 — Gravel to coarse sand — 160 0 3200 — Coarse to medium sand — 2800 560 0 — Medium to fine sand 2000 4800 960 0 60 ,000 Fine sand to silt...

Ngày tải lên: 11/08/2014, 09:21

... (mL/g) Trichloroethylene (TCE) 1 26 Tetrachloroethylene (PCE) 364 1,2-Dibromomethane 92 cis-1,2-Dichloroethylene 86 trans-1,2-Dichloroethylene 59 1,1,1-Trichloroethane (TCA) 152 Chloroform (TCM) 44 1,2-Dichloropropane ... CHCl:CCl 2 5.37 Dichlorofluoromethane (Freon-12) CCl 2 F 2 4.94 Chloroform a CHCl 3 4.88 1,1-Dichloroethane (1,1-DCA) C 2 H 4 Cl 2 4.04 cis-1,2-Dichloroethylene CH 2 Cl 2...

Ngày tải lên: 11/08/2014, 09:21

... intersected the silty sand and a highly permeable sand and gravel layer. Concern about the longer screened, upgradient well diluting the TCE concen- tration via the uncontaminated sand and gravel layer ... involving trace metal contamination, low-flow purging and sampling in addition to rigorous adherence to sampling and handling procedures were examined. When low-flow and trace m...

Ngày tải lên: 11/08/2014, 09:21

... a sandy vadose zone. 2. Mechanism and implications, Geoderma, 46: 59–71. Jury, W. and K. Roth, 1990. Transfer Functions and Solute Movement through Soil: Theory and Applications, Birkhauser-Verlag, ... include: •Finite-difference • Finite-element • Boundary-element • Particle tracking: method of characteristics (MOC), modified method of character- istics (MMOC), and random walk • I...

Ngày tải lên: 11/08/2014, 09:21

... name Methyl-tertiary- Tertiary-amyl- Tertiary-hexyl- Ethyl-tertiary- Tertiary-amyl- Diisopropyl butyl-ether methyl-ether methyl-ether butyl-ether ethyl-ether ether Chemical formula (CH 3 ) 3 COCH 3 (CH 3 ) 2 (C 2 H 5 ) ... (%wt) Carbon 68 .13 70.53 72.35 70.53 72.35 70.53 Hydrogen 13.72 13.81 13.88 13.81 13.88 13.81 Oxygen 18.15 15 .66 13.77 15 .66 13.77 15 .66 Molecular weight 88.15 102.18...

Ngày tải lên: 11/08/2014, 09:21

... vary in size. C-LLE can be performed using a lighter- than-water extractant or a heavier-than-water extractant. Typical lighter-than-water extractants include various lower-molecular-weight alkanes ... of environmental interest are given below, along with mean percent recoveries from spiked clay, using both S-LSE and AS-LSE techniques. 21 Analyte Mean % Recovery (% RSD) S-LSE a AS-LSE b δ...

Ngày tải lên: 11/08/2014, 21:21

... Spectrometry 423 Principles of the quadrupole 425 Principles of the ion-trap 433 Tuning a quadrupole 4 36 Principles of Time-of-flight 445 Interpretation 447 Tandem strategies and techniques 449 High ... 9.0 10.0 11.0 12.0 TP31001B.RAW 1.95 3.39 6. 14 6. 44 o-xylene 7 .67 0.84 Toluene m, p-xylene EthylBz Benzene HS-C-GC-FID Separation of btex components © 20 06 by Taylor & Fra...

Ngày tải lên: 11/08/2014, 21:21

... 19.10b 6. 37a 382.20a 229.32c 63 7a 7.50b 0 .63 c 0 .63 b 374.06a 259.94b 63 4a 7.90a 0 .63 c 0 .63 b 347 .60 a 284.40a 63 2a S3 4.30d 155.52a 9.72a 140.94b 184 .68 c 486a 6. 20b 67 .34b 4.81b 202.02a 2 06. 83b 481a 7.30c ... pH. 1.3 1.2 1.1 1 0.9 0.8 0.7 0 .6 0.5 0.4 0.3 Pb-DTPA, mg kg -1 -1 -1 y =-0 . 061 x + 1.17 R =0.225* 2 R = 0. 460 ** 2 Soil pH 3579 1.2 1 0.8 0 .6 0...

Ngày tải lên: 18/06/2014, 19:20