Comparative Study of Physico-Chemical Analyses of Different Water Resources in Setiu Wetland, Terengganu

2018 ◽  
pp. 25-37
Author(s):  
Mohd Nizam Lani ◽  
Nurul Fatin Malek Rivan ◽  
Adilah Ismail ◽  
Wan Bayani Wan Omar ◽  
Zaiton Hassan ◽  
...  
Keyword(s):  
Water Resources ◽  
Comparative Study ◽  
Chemical Analyses ◽  
Physico Chemical

Ecotoxicology of Waters under the Influence of a Petrochemical Complex

1994 ◽  
Vol 29 (8) ◽  
pp. 279-290
Author(s):  
R. Noll ◽  
V. Zandonai ◽  
M. A. Ries
Keyword(s):  
Wastewater Treatment ◽  
Water Resources ◽  
Environmental Impact ◽  
Toxicity Tests ◽  
Chemical Analyses ◽  
Regular Monitoring ◽  
Petrochemical Complex ◽  
Physico Chemical ◽  
Local Water ◽  
Area Of Influence

SITEL, Integrated Wastewater Treatment System of South Petrochemical Complex, operated by CORSAN, the State Sanitation Company, has been conducting toxicity tests since 1986 in order to complement the physico-chemical analyses which had been showing unsatisfactory results. These tests were to assess the performance of the tertiary stabilization ponds where fishes have been found with deformities since 1983. Ever since then, toxicity tests have been a routine in SITEL's monitoring procedures, and although they do not indicate the agents, they inform the effects of the discharge of petrochemical effluents on the local biota, being one further step to secure and preserve local water resources. This paper summarizes the regular monitoring and studies SITEL has conducted until now to evaluate the full environmental impact on waters in the area of influence of the effluents of the South Petrochemical Complex.

Physico-Chemical Analysis of Groundwater and Effect of Climatic Change in Angul-Talcher Area

2018 ◽  
Vol 6 (12) ◽  
pp. 26
Author(s):  
Aliva Bera ◽  
D.P. Satapathy
Keyword(s):  
Water Resources ◽  
Linear Regression ◽  
Regression Model ◽  
Climatic Change ◽  
Linear Regression Model ◽  
Ann Model ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Simulation Based

In this paper, the linear regression model using ANN and the linear regression model using MS Excel were developed to estimate the physico-chemical concentrations in groundwater using pH, EC, TDS, TH, HCO3 as input parameters and Ca, Mg and K as output parameters. A comparison was made which indicated that ANN model had the better ability to estimate the physic-chemical concentrations in groundwater. An analytical survey along with simulation based tests for finding the climatic change and its effect on agriculture and water bodies in Angul-Talcher area is done. The various seasonal parameters such as pH, BOD, COD, TDS,TSS along with heavy elements like Pb, Cd, Zn, Cu, Fe, Mn concentration in water resources has been analyzed. For past 30 years rainfall data has been analyzed and water quality index values has been studied to find normal and abnormal quality of water resources and matlab based simulation has been done for performance analysis. All results has been analyzed and it is found that the condition is stable. 

scholarly journals Total synthesis of [ 15 N]-labelled C6-substituted purines from [ 15 N]-formamide—easy preparation of isotopically labelled cytokinins and derivatives

2018 ◽  
Vol 5 (11) ◽  
pp. 181322 ◽  
Author(s):  
Jan Buček ◽  
Marek Zatloukal ◽  
Libor Havlíček ◽  
Lucie Plíhalová ◽  
Tomáš Pospíšil ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Metabolic Profiling ◽  
Growth Regulation ◽  
Plant Tissues ◽  
Chemical Analyses ◽  
Purine Derivatives ◽  
Biological Matrices ◽  
Physico Chemical ◽  
Plant Growth Regulation

Cytokinins (CKs) and their metabolites and derivatives are essential for cell division, plant growth regulation and development. They are typically found at minute concentrations in plant tissues containing very complicated biological matrices. Therefore, defined standards labelled with stable isotopes are required for precise metabolic profiling and quantification of CKs, as well as in vivo elucidation of CK biosynthesis in various plant species. In this work, 11 [ 15 N]-labelled C6-purine derivatives were prepared, among them 5 aromatic ( 4, 5, 6, 7, 8 ) and 3 isoprenoid ( 9, 10, 11 ) CKs. Compared to current methods, optimized syntheses of 6-amino-9H-[ 15 N 5 ]-purine (adenine) and 6-chloro-9H-[ 15 N 4 ]-purine (6-chloropurine) were performed to achieve more effective, selective and generally easier approaches. The chemical identity and purity of prepared compounds were confirmed by physico-chemical analyses (TLC; HRMS; HPLC–MS; 1 H, 13 C, 15 N NMR). The presented approach is applicable for the synthesis of any other desired [ 15 N 4 ]-labelled C6-substituted purine derivatives.

Investigation on full 6" masks using innovative solutions for direct physico-chemical analyses of mask contamination and haze

2011 ◽  
Author(s):  
L. Dussault ◽  
B. Pelissier ◽  
F. Dufaye ◽  
S. Gough ◽  
J. Hamonne ◽  
...  
Keyword(s):  
Chemical Analyses ◽  
Physico Chemical ◽  
Innovative Solutions
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