Arsenic fractionation in soils using an improved sequential extraction procedure

... Ure, Anal. Chim. Acta 382 (1999) 317. [48] G.J. Kirk, Eur. J. Soil Sci. 50 (1999) 369. Analytica Chimica Acta 436 (2001) 309–323 Arsenic fractionation in soils using an improved sequential extraction ... commonly used SEPs in fractionat- ing As and Se using standard minerals and mixtures thereof [17]. They showed that during reductive and oxidative dissolution of As from...

Ngày tải lên: 15/03/2014, 23:48

... 1 Arsenic contamination in soils, water and plants surrounding gold mine in Thailand Thares Srisatit 1 , Wanpen Wirojanagud 2 , Thanes Weerasiri 3 1 Faculty of Environmental Engineering, ... 0.3 mg/kg in plants and 0.001-0.01 mg/l in surface water. Contamination in soils and plants were found higher much larger than those in surface water flown from the tailing of g...

Ngày tải lên: 25/04/2013, 08:21

... treatment. 2.5. Sequential extraction of As in soils Soil samples were extracted using the sequential extraction procedure of arsenic (Onken and Adriano, 1997). The procedure separated As into five operationally defined ... contamination from the leaching losses of wood preservatives. As arsenic accumulates in soils, there may be an increase in health risks resulti...

Ngày tải lên: 16/03/2014, 00:07

Ngày tải lên: 15/03/2014, 23:15

Ngày tải lên: 16/03/2014, 00:07

... modulated OFDM signal in the time domain, and inserts CP (Cyclic Prefix) in the forefront of the sequence which can eliminate ISI (Inter Symbol Interference) and ICI (Inter Carrier Interference) signals ... fourth rankings. On the other hand, the second-order interpolation is coming in the fifth ranking and the worst technique goes to the linear interpolation for the estimation of...

Ngày tải lên: 26/05/2013, 21:28

... load into the RBS and the runoff depth from the cornfield increased the atrazine mass loss in runoff leaving the RBS increased (Table 4). Atrazine mass in runoff leaving the RBS were in the range ... friendly than the DOS version and allows easy manipulation of input data in each window session. RESULTS AND DISCUSSIONS Simulation of atrazine fate, leaching and runoff loss...

Ngày tải lên: 05/09/2013, 09:08

... by any means, without permission in writing from the publisher. Engineering Mechanics - Statics Chapter 2 Solution: Write the vectors and unit vectors r 1v r 1 sin ε () cos φ () sin ε () − sin φ () cos ε () ⎛ ⎜ ⎜ ⎜ ⎝ ⎞ ⎟ ⎟ ⎟ ⎠ = ... reproduced, in any form or by any means, without permission in writing from the publisher. Engineering Mechanics - Statics Chapter 2 cos ε () 2 cos γ () 2 +...

Ngày tải lên: 17/02/2014, 14:20

... arsen- ´ ic-containing waste: leach tests and behavior of arsenic in the leachate. Waste Manage 1995;15:55–62. Dutre V, Vandecasteele C. Immobilization mechanism of arsen- ´ ic in waste solidified using ... sorption andyor inclusion in pozzolanic reaction products andyor the formation of calcium arsenic (Ca–As) precipitates. In this study, suspensions of lime–As and lime–As–kaol...

Ngày tải lên: 15/03/2014, 23:48

... 2 min, decreasing to 50% A in 0.1 min and maintained for 3 min, then increasing to 100% A in 0.1 min and maintained for 7 min. The eluate reached the hydride generator system and after passing ... agricultural soils in some regions, as a consequence of the use of arsenic- containing pesticides and herbicides [1–3]. Other contributing sources of arsenic in the soils are industr...

Ngày tải lên: 15/03/2014, 23:49