Biogeochemical characteristics of the surface sediments along the western continental shelf of India

Evaluation of metal enrichment and trophic status on the basis of biogeochemical analysis of shelf sediments of the southeastern Arabian Sea, India

“…The marine algae derived organic matter is present in the shelf sediments of Arabian Sea. These results are in agreement with the data reported by Jacob et al (2009) for western continental shelf of India. TOC/TS ratio is generally used as diagenetical proxy to distinguish oxic and anoxic environments.…”

“…In both deep and shallow depths of the Arabian Sea, the PRT/CHO ratio varied between 0.02 and 0.14, and stood well below unity (PRT/CHO < 1) which implies the presence of aged (less degradable) organic matter. This result supports the earlier observation made by Jacob et al (2009). The dominance of carbohydrates over lipids and proteins indicate its lower nutritive aspect and their aged and refractory nature (Grémare et al, 2003).…”

“…These include studies on labile organic matter (Gonsalves et al, 2011) and trace metal concentrations (Laluraj and Nair, 2006). A few studies deal with the recent trends in the biogeochemical features of the southeastern Arabian Sea (Jacob et al, 2009;Sudhanandh et al, 2011;Manju and Sujatha, 2012). The distribution of C, N, H and S contents in the southeastern Arabian Sea is poorly understood and little is known about the trophic status and origin of sedimentary organic matter (Balachandran et al, 2003).…”

Fate and source distribution of organic constituents in a river-dominated tropical estuary

“…The LPD/CHO ratio ranged from 0.08 to 3.85 (figure 4a) with a maximum value at the riverine zone (S2) during POM09, which implied high nutritional value as well as the freshness of OM in the sedimentary environment. Significantly lower ratios observed during the monsoon season (p < 0.01) provided a clear evidence of lower productivity and higher allochthonous organic input associated with land runoff (Jacob et al 2008(Jacob et al , 2009.…”

Ratiometric fluorescent probe with AIE property for monitoring endogenous hydrogen peroxide in macrophages and cancer cells

“…Sensitivity was an important criterion for developing highly sensitive fluorescence imaging agents 31 . Mainly reason was that the pathophysiologic ally relevant concentrations of H 2 O 2 were in the low to medium micro molar concentrations 32 . We further investigate sensitive of probe in order to prove whether TPE-TLE can detect H 2 O 2 in intercellular environment.…”