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Apr 02, 2020Open AccessPreprint
The present work aims to elaborate a review of the geochemical aspects used to compose the Raw Water Quality Index (WQI), highlighting lake environments and their importance for management practices. This paper is a bibliographic review based on specialized scientific and legislative literature conducted between April 2016 and March 2019. The scientific articles were selected by searching the Scielo database and the Periódicos Capes and the database search was performed using the terminologies r...
May 13, 2015Open AccessPreprint
In the present study, Kandelia obovata (S.,
L.) Yong seedlings were exposed to As V(0, 30, 60 and 150 mg kg-1) under
different levels of sulfur (0, 0.1, 0.2 and 0.4% (w: w)) supply. A highly
significant negative correlation between arsenic concentration in leaves with sulfur
treatment (r=-0.554, P...
Apr 29, 2015Open AccessPreprint
The present work
describes the validation of an analytical method for chromatographic
determination of chlorimuron ethyl herbicide (compound of sulphonylurea group)
in sediments, in according with Brazilian legislation, following the guidance
and normative documents of INMETRO (DOQ-CGCRE-008) and ANVISA (Resolution RE no
899 - 2003). The results show that the chromatographic method demonstrated to
be selective, accurate, precision and linear over the concentration range of
5.0-1000.0 ug L-1...
Mar 23, 2015Open AccessPreprint
study was conducted in gedarif research station farm for two seasons in 2013
and 2014. The objective was to determine optimum seed rate and time of
harvesting mungbean for green forage and hay under rain fed conditions. The
results showed different significant in three stage of cutting and three seed
rate at different parameter as indicated by plant height, plant number, branch
number, leave number and dry weight. The result showed highly significant
between vegetative and boding stage. In ...