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Rajshahi, University, Rajshahi). Synthesis and Dhaka). A Mathematical Model for the
biological activities of some new azidine Benzylation of p-Cresol with Benzyl Alcohol.
derivatives from 1-Substituted-3-N-Aleuritamido Bang. J. Sci. Ind. Res., 2007, 42 (2), 187-194.
Thiocarbamides. Bang. J. Life Sci., 2008, 20 (1),
61-67. The reaction of p-cresol with benzyl alcohol in the
presence of perchloric acid produces only 2-
Some new 4-N-aleurityl-2-N-aryl-6-arylimino-3- benzyl-4-methylphenol in high yield, A
thiono-l-thia-2,4,5-triazidine derivatives have been mathematical model has been developed for the
synthesized by reaction of different N-aryl-S- process by Yates pattern experimental design.
chloroisothio-carbamoyl chloride with 1-
Substitued-3-N-aleuritamido thuiocarbamides in 057 ISLAM, M.F. & RAHMAN, M.M.
benzcne medium. The later being prepared by (Dept. of Applied Chemistry and Chemical
reaction between aleurilyl hydrazide (prepared Technology, Rajshahi University, Rajshahi).
from aleuritic acid, lac product) and different Arsenic Removal Efficiencies a Few Impregnated
isothiocyanates. Antibacterial activities of the Silicate Materials. Bang. J. Sci. Ind. Res., 2006,
synthesized compounds have also been determined 41 (1 & 2), 1-14.
qualitatively against different pathogenic bacteria
and found most of them highly active. The commonly available brick particles ware
impregnated with selected compounds and tested
055 HOSSAIN, M.Z. (Soil Science Discipline, for As absorption propertice. The materials tested
Khulna University, Khulna); ULLAH, S.M.; are FeSO 4 treated roasted brick particles, Fe 2(SO 4) 3
AHAD, S.A. & ULLAH, M.B. (Dept. of Soil, treated roasted brick particles FeSO 4 and Na 2CO 3
Water and Environment, Dhaka University, treated brick particles, Fe 2(SO 4) 3 and Na 2CO 3
Dhaka).Transfer of Cadmium from Soil to treated brick particles, ZaSO 4 and Na 2CO 3 treated
Vegetable Crops. Bang. J. Sci. Ind. Res., 2007, 42 brick particles, FeSO 4 and Na 2HPO 4 treated brick
(3), 327-334. particles and waste cement plaster as such. It was
observed that the substances showed different
A pot experiment was conducted in order to behavior of As absorption on short and long time
study the transfer of Cd from soil to the contact.On long time contact periods the
vegetable crops namely Lettuce (Lactuca sativa absorption capacities are much incteased with high
L.), Spinach (Spinacia oleracea L.), Lal sak concentrations of As in solution However with
(Amaranthus tricolor L.) and Data sak short time contact with low As concentration, the
(Amaranthus spinosis L.). The mean transfer materials show saluration or no absorption after
factors (concentration in plant dry weight / certain time period. Thus variable capacitics for As
concentration in soil dry weight) varied from absorption are shown depending on conceatration,
2.030 to 6.785 in root and 0.166 to 0.525 in time of absorption and interval time between two
shoot. The following mean Cd-transfer factors contact periods.
(DW /DW) were obtained; Lettuce (root: 6.785,
shoot: 0.271), Spinach (root: 4.775, shoot: AS (III) absorption was studied in the pH range
0.385), Lal sak (root: 2.03, shoot: 0.166) and 2.15-7.0 The data also show that with a contact
Data sak (mot: 3.445, shoot: 0.525). The transfer time of 3 hrs of more the level of As is reduced to
factor of Cd in roots of vegetables decreased in the acceptable limit of 0.05 ppm in water.
the order: Lettuce>Spinach>Data sak>Lal sak;
while in shoots it was Data High conceatration of phosphate in water decreases
sak>Spinach>Lcttuce>Lal sak. as absorption as phosphate is also strongly
absorbed by iron oxide impregnated brick
056 ISMAIL, M. ; JAMAL, M.S.; ISLAM, particles.
S.T.A; ALAM, M. Z ; ASHADUZZAMAN,
M. & SAHA, M. (Dept. of Applied Chemistry Leaching of loaded arsenic form brick particles
and Chemical Technology, Dhaka University, using different common chemicals was also
studied for ferrous sulfate treated roasted brick
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