Diphenylcarbazone as an Internal Indicator in Volumetric Analysis Determination of Molybdenum by Lead Nitrate

Bioassay of Chlorsulfuron Residue in Soil by Using Cress (Lepidium sativum L.) Plant as an Indicator

M.Sc Student, Pardis Faculty of Agriculture and Animal Science, Tehran University, Iran 2- Ph.D Student, Pardis Faculty of Agriculture and Animal Science, Tehran University, Iran Received:11 Nov. 2007 Accepted: 7 Feb. 2008 ABSTRACT Chlorsulfuron is a herbicide which shows carry over effects. Their residues may damage subsequent crops presented in rotational program. Bioassay is considered a goo...

Erythrocyte arginase activity as an indicator of lead exposure.

Determination of traces of molybdenum and lead in foods by x-ray fluorescence spectrometry

An Energy Dispersive X-ray Fluorescence (EDXRF) method using X-ray emitting isotopes in combination with pre-concentration by carbonization was developed to determine the levels of Mo and Pb accumulated in foods. The samples were carbonized at temperatures range of 150-400°C for 15 min to 2 h for powdering. The powder was then quickly formed into a pellet for EDXRF analysis. This analytical met...

Semen analysis as an indicator

What do we mean by fertility: male or female? Infertility whether it is male or female is usually defined as lack of conception leading to a live birth after 1 year of regular coitus. Humans are, however, relatively infertile at least in relation to fertility among the domesticated species. In the human, only one in four cycles will result in a clinical pregnancy and not all of these conception...

Molybdenum and Nitrate Reductase

Numerous investigators have shown that nitrate nitrogen accumulates in higher plants (l-3) and fungi (2, 4) which are deficient in molybdenum. Other workers have shown that sulfur, zinc, and manganese deficiencies in higher plants may also result in a similar phenomenon (5). The free amino acids present in molybdenum-deficient plants are usually less than those in normal tissues, thus indicatin...