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Most of the environmental studies make use of the naturally occurring isotopes with the advantage that they need not be injected in the system for a particular study Stable isotopes such as isotopes of light elements (hydrogen, carbon, nitrogen, oxygen, sulphur, chlorine) are most commonly used in combination with conventional techniques in the environmental studies. Isotope like C-13, N-15, and S-34 are used to study the origin, type, fate, behavior of pollutants in a system. In this study, stable isotopes have been applied in combination with conventional techniques to investigate Karachi...

A journey of findings, possible measures of well being, health and prosperity. First study of ground water of Mailsi which highlights the isotopic, chemical and heavy metal analysis. Findings depicts Author's concerns towards society especially the availability of clean water. The ultimate results of the work will be the welfare of the people. This research will provide a strong reference to the new researchers further in this field.

Metals are non-biodegradable and are considered as major environmental pollutants causing cytotoxic, mutagenic and carcinogenic effects in animals. Aquatic organisms have the ability to accumulate heavy metals from various sources including sediments, soil erosion and runoff, air depositions of dust and aerosol, and discharges of waste water. Therefore, accumulation of heavy metals in aquatic organisms can pose a long lasting effect on biogeochemical cycling in the ecosphere.The rapid growth of population in the catchment areas may lead to deterioration of lake water quality...

The book deals with nitrate determine in environmental matrices and food products. A simple and sensitive Reversed Phase Ion Pair High Performance Liquid Chromatography (RP-IP- HPLC) method for the determination of nitrate has been developed. The determination of nitrate concentration was carried out on HPLC (Waters) coupled with UV detector, using reversed phase chromatography technique. Investigations were performed using mobile phase comprising 80% tetra-ethyl ammonium chloride (6.0 mM) and 20 % pure acetonitrile (HPLC grade). Separation was done by reversed phase C18 column (150mm 4.5mm...