Air pollution with nitrates as one of the major factors in the chemical composition of water in shallow-supplied mountain springs

This article presents the study results of the change dynamics in the chemical composition of water in Lake Iskanderkul and the rivers flowing into it, as well as the comparison of water quality in the water bodies of the Iskanderkul Basin and several mid-stream tributaries of the Zarafshan River. It was established that the chemical composition of water in Lake Iskanderkul and its tributaries meets the requirements of the corresponding state standard (GOST 2874-82 “Drinking Water”). However, in terms of dissolved oxygen, copper, zinc, lead and iron the water in Lake Iskanderkul does not satisfy fish farming requirements. The main water pollution sources in the area include such natural phenomena as floods, avalanches, mudslides, and rock dissolution.

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Chemical Composition of Insoluble Particles in an Ice Cap on Storøya, Svalbard (Abstract)

Annals of Glaciology ◽

10.1017/s0260305500004511 ◽

1988 ◽

Vol 10 ◽

pp. 204 ◽

Cited By ~ 1

Author(s):

Jost Heintzenberg ◽

Margareta Källström ◽

Hans-Christen Hansson ◽

Stig Jonsson

Keyword(s):

Statistical Analysis ◽

Chemical Composition ◽

Elemental Carbon ◽

Ice Core ◽

Multivariate Statistical ◽

Factors Affecting ◽

X Ray ◽

Ice Cap ◽

Insoluble Particles ◽

Major Factors

During the Ymer-80 expedition, a 6 m long ice core was taken on the low-lying ice cap Storøyjøkulen, Svalbard. Core samples of about 10 ml were filtered on 0.1 μm pore-size Nuclepore filters, for analysis with a soot photometer and by means of particle-induced X-ray emission, which yielded elemental carbon and about 15 metals in the insoluble microparticles. The concentrations were comparable to Arctic snow data from other locations. Multivariate statistical analysis of the chemical results indicates two major factors affecting microparticle composition: crustal and anthropogenic. A regular seasonal concentration pattern was found which is consistent with the c. 40 cm annual accumulation deduced from mass-balance studies on the ice cap.

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Changes in the chemical composition of water-extractable organic matter during composting: Distribution between stable and labile organic matter pools

Chemosphere ◽

10.1016/j.chemosphere.2006.09.010 ◽

2007 ◽

Vol 66 (11) ◽

pp. 2166-2176 ◽

Cited By ~ 81

Author(s):

D. Said-Pullicino ◽

K. Kaiser ◽

G. Guggenberger ◽

G. Gigliotti

Keyword(s):

Organic Matter ◽

Chemical Composition ◽

Labile Organic Matter ◽

Chemical Composition Of Water ◽

Extractable Organic Matter ◽

Water Extractable

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Isotopic and chemical composition of water and steam discharges from volcanic-magmatic-hydrothermal systems of the Guanacaste Geothermal Province, Costa Rica

Applied Geochemistry ◽

10.1016/0883-2927(92)90022-u ◽

1992 ◽

Vol 7 (4) ◽

pp. 309-332 ◽

Cited By ~ 90

Author(s):

Werner F. Giggenbach ◽

Rodrigo Corrales Soto

Keyword(s):

Costa Rica ◽

Chemical Composition ◽

Hydrothermal Systems ◽

Chemical Composition Of Water

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STUDY ON THE BIODEGRADATION OF OIL SPILLED ON THE SEA

International Oil Spill Conference Proceedings ◽

10.7901/2169-3358-1997-1-989 ◽

1997 ◽

Vol 1997 (1) ◽

pp. 989-990 ◽

Cited By ~ 2

Author(s):

Zhao Jianqiang ◽

Zhu Junhuang

Keyword(s):

Chemical Composition ◽

Dissolved Oxygen ◽

Oxygen Content ◽

Oxygen Demand ◽

Nutrient Elements ◽

Factors Affecting ◽

Major Factors ◽

Spilled Oil

ABSTRACT Three major factors affecting the biodegradation of spilled oil (chemical composition of spilled oil, dissolved oxygen content in water, and nutrient elements for microorganisms) were analysed. The sequences of biodegradation rates of some hydrocarbon compounds are summarized. The oxygen demand for biodegradation of 1 g of hydrocarbons was derived as 3 to 4 g. The maximum ratio of carbon (C), nitrogen (N), and phosphorus (P) that microorganisms need was suggested as C:N:P = 100:7:0.14.

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