OALib PrePrintsPREPRINT - OALib PrePrints is not a peer-reviewed venue.
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...
Sep 02, 2014Open AccessPreprint
of green nanotechnology is generating interest of researchers toward
ecofriendly biosynthesis of nanoparticles. Biomolecules present in plant extracts
can be used to reduce metal ions to nanoparticles in a single-step green
synthesis process. This biogenic reduction of metal ion to base metal is quite
rapid, readily conducted at room temperature and pressure, and easily scaled
up. In this study, biosynthesis of stable copper nanoparticles were done using
Mar 05, 2014Open AccessPreprint
Abstract: The formation of ash and the transformation of minerals matter during coal combustion have been topics of intensive study by numerous research groups. The fact that toxic and heavy metal constituents are associated with pulverized coal ash has been known for many years. Coal combustion not only generates gaseous pollutants like SO2 and NOx but also toxic and heavy metals to the atmosphere. From the environmental point of view, the determination and speciation of trace toxic and heavy m...