Record Details

ASSESSMENT OF IONIC TOXICITY OF WATER SOURCES IN RAJBARI DISTRICT IN BANGLADESH

SAUL Archive

View Archive Info
 
 
Field Value
 
Title ASSESSMENT OF IONIC TOXICITY OF WATER SOURCES IN RAJBARI DISTRICT IN BANGLADESH
 
Creator ISLAM, MOHAMMAD NURUL
 
Subject IONIC TOXICITY OF WATER SOURCES IN RAJBARI DISTRICT IN BANGLADESH
 
Description A Thesis
Submiued to the Faculty of Agriculture,
Sher-e-Bangra Agriculiural University, Dhaka-1207
in part fulfillment of requirements for the degree of
MASTER OF SCIENCE (M.S.)
IN
AGRICULTURAL CHEMISTRY
SEMESTER: JANUARY-JUNE'11
The study was conducted to assess the degree of ionic toxicity and to classify the water on the
basis of standard criteria for irrigation, drinking, livestock, poultry. aquaculture and industrial
purposes of 20 ground water sources in Rajbari district. The chemical analysis included pFl,
electrical conductivity (EC), total dissolved solids (IDS), sodium adsorption ratio (SAR). soluble
sodium percentage (SSP). residual sodium carbonate (RSC) and hardness (111) and major ionic
constituents like Ca2 . Mg2 , K. Nat. Fe2t Mn2 , B. Cu. POt, C032'. 11CO3. SOt and Clwere
F
were also calculated. The pH (6.85 to 7.33) showed slightly acidic to slightly alkaline. The lOS
values rated all samples as 'fresh water'. F.0 and SAR were 'medium' and 'high salinity' (C2 and
C3) classes and 'low alkali hazard' (SI) class, combined expressed as C2SI and C3SI. SSP was of
'excellent', 'good' and 'permissible' categories. Waters were free from RSC and belonged to
'suitable' category for irrigation. The waters were classified as 'hard'. 'very hard' and 'medium
hard' based on hardness (Hi). The toxicitics of Mn and Cu were not found in the study area for
irrigation, drinking and livestock but Fe, Cl, SO4 and B toxicitics were found in some sources. Iron
content of all samples was suitable for irrigation but 12 samples of Fe were unsuitable for drinking
and livestock. Cl concentrations of all samples were below toxic level and thus suitable for
irrigation and drinking and all but one sample was suitable for livestock. All samples of NO3 were
not toxic for drinking and livestock but all samples of l-lCOj were toxic for irrigation. The
following combinations of pH vs SAR, SAR vs SSP Ca vs 11CO3' and Mg vs HCO3- were
indicated significant as positive correlations while SSP vs H1 and RSC vs Hr revealed negative
significant correlations at 1% and 5% level of significance. To the contrary. the rest combinations
showed insignificant correlations. On the basis of major ionic constituents, it was observed that
water from pond and deep tube-wells were comparatively better than well waters for irrigation,
drinking, livestock and industrial purposes.
 
Date 2018-12-01T15:57:24Z
2018-12-01T15:57:24Z
2011-06
 
Type Thesis
 
Identifier http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/1934
 
Language en
 
Format application/pdf
 
Publisher Department of Agricultural Chemistry, Sher-e-Bangla Agricultural University.