dissolved humus in soil waters

Ngày tải lên: 05/09/2013, 08:40

... with increasing concentration of Cu in soil. The accumulation of heavy metal in plant tissues of Brassica juncea L. is reflected the concentration in soil. The contents of Cu in plant increase ... The soil samples from each growing pot were extracted by HNO 3 0.43N in order to determine the content of Cu 2+ mobilization in soil, while the plant samples were acid digested for determining ... in soil and Cu content in plant shows a significant positive effect (Fig. 1). Table 3. The contents of Cu 2+ in soil, Cu content in plant and plant height (fresh weight) Trt Cu 2+ in soil...

Ngày tải lên: 14/03/2014, 15:20

... concentrations in soil and other solid matrices include the following: 1. Samples should be handled as intact soil cores until being transferred into methanol or into the container that will ... VOCs in soil or other solid matrices are sampled and analyzed. These guidelines address methods for: (1) handling of samples as intact soil cores; (2) preserving samples; (3) storing samples in ... for decision making (e.g., in excavated soils and when determining disposal or treatment options, or for determining concentrations of VOCs that have a high affinity for the soil matrix). 7.0...

Ngày tải lên: 14/03/2014, 20:20

... descriptions of soil pores that have been quantified by thin sectioning and staining allow estimates of water fluxes in soil. In addition, soil features, such as clay coatings and iron mot- tling, provide ... coordinated “grand experiment” was discussed to facilitate soil scientists in addressing the issue of scaling. Overarching challenges: • Placing a value on the soil resource • Integrating research ... Frontiers in Soil Science Research, of experts in soil science and associated disciplines to identify emerging research opportunities and expected ad- vances in soil science, particularly in the integration...

Ngày tải lên: 15/03/2014, 15:20

... al., 2000). Reports on qCO values in metal 2 contaminated soils have been contradictory, with higher values in contaminated soils than that in uncontaminated soils in some reports (Chander and Brookes, ... ions by soil organisms to the competition for binding of that metal ion by all reactive soil components (including the organisms). In addition, the total amount of bioavailable metal in soil is influenced ... nitro- y1 gen mineralization to a greater extent in a sandy loam soil than that in a clay-loam soil (Dar and Mishra, 1994). Interestingly, there was a significant decrease (14%) in nitrification in a soil...

Ngày tải lên: 15/03/2014, 23:21

... concentra- tion in wheat grain. Aust J Agric Res 1993;44:1221᎐ 1234. Scheiner JD, Lavado RS. The role of fertilization on phospho- rus stratification in non tilled soils. Commun Soil Sci Plant Anal ... Experimental Station located in Per- Ž. gamino 33Њ56Ј S; 60Њ34Ј W . The soil is a Per- gamino Series, fine illitic thermic Typic Argiudoll Ž. Table 1 . In 1979 three soil treatments started: Ž. i ... cadmium content. Water Air Soil Pollut 1993b;74:251᎐ 265. Jeng AS, Slingh BR. Cadmium status of soils and plants from a long-term fertility experiment in southeast Norway. Plant Soil 1995;175:67᎐ 74. Lee...

Ngày tải lên: 15/03/2014, 23:22

... Due to heavy industrialization and urbanization for the last few decades, heavy metal concentrations in the cultivating soils have gradually increased. The increase of contaminants in agricultural ... concentrations of Cd and As in soils were increased, the contents of Cd and As in agricultural products were significantly increased, basically. The contents of Cd in edible part of Chinese cabbage, radish ... of Chinese cabbage, radish, and lettuce grown at the different As treated soils. Figure 2 Growth damage of Chinese cabbage at the 100 mg kg -1 Cd concentration in soil during early growing season. KIM...

Ngày tải lên: 16/03/2014, 00:07

... in recent years in the study of kinetics of the dissolution of oxide and carbonate minerals and the weathering of minerals. Finally, we demonstrate in discussions on weathering rates in ... Department of Civil and Mineral Engineering, University of Minnesota, Minneapolis, Minnesota lI()i.FNA COSOVH';, Rudjer Boskovic Institute, Center for Marine Research, Zagreb, ... hl' examined. The inflow and outflow rates are constant and equal to one 111101 her: Instantaneous contaminant input ~ lJin I~~ LI ________ 'I i~ qout lJin = qout...

Ngày tải lên: 16/03/2014, 11:44

... to engage in the debate. Many old mining sites are relatively small and isolated, but the contamination at some mining and processing sites (including areas in the “fallout zone” downwind of smelters) ... residences in the small, remote mining 49 Jasper County is an historic lead and zinc mining, milling, smelting area located in southwest Missouri. It is located in EPA Region 7, headquartered in Kansas ... Smelting and Refining Company, a subsidiary of the Anaconda Company, had a lead mill and smelter at Tooele. After the war, lead-zinc mining production in Utah declined. In 1958, US Smelting and International...

Ngày tải lên: 24/03/2014, 05:20

... coastal waters of Khanh Hoa province (3266 ha) , the coastal waters of Ninh Thuan province (1000 ha). In southern side and in Thailand Gulf (only in Vietnamese territory), include coral reefs in ... of the oceans is shifting in response to increasing atmospheric CO2 concentrations to rise, and at increasing rates. Even small changes in CO2 concentrations in surface waters may have large ... PI326-8  The coral reefs in coastal waters of Ninh Thuan Province: The narrow non-typical fringing reefs exist in main areas: Hon Chut to Da Vach Cape - 42 ha, Vinh Hy Gorge - 28 ha , Hon...

Ngày tải lên: 26/03/2014, 14:07

... without intent to infringe. Library of Congress Cataloging -in- Publication Data Lick, Wilbert J. Sediment and contaminant transport in surface waters / author, Wilbert Lick. p. cm. “A CRC title.” Includes ... electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission ... shers as well as for swimming, windsurng, surng, scuba div- ing, snorkeling, and shellshing. Since 1995, sh consumption advisories and health warnings have been posted in southern California...

Ngày tải lên: 18/06/2014, 22:20

... fragile. With increasing settling time, this type of oc will become more like a teardrop in shape and will become denser as it continually sweeps up smaller particles and incorporates them into its ... Sediment and Contaminant Transport in Surface Waters (d<2µm, G > 9). Particles tend to be coarser in the shallower parts and ner in the deeper parts of each basin. This variation in particle ... g/cm 3 . By solving the above equation for x w , one obtains x W W w   26 116 . . (2.14) © 2009 by Taylor & Francis Group, LLC 34 Sediment and Contaminant Transport in Surface Waters mineralogy...

Ngày tải lên: 18/06/2014, 22:20

Ngày tải lên: 18/06/2014, 22:20

Ngày tải lên: 18/06/2014, 22:20

Ngày tải lên: 18/06/2014, 22:20

Ngày tải lên: 18/06/2014, 22:20

Ngày tải lên: 18/06/2014, 22:20

Ngày tải lên: 18/06/2014, 22:20