The North Pacific Subtropical Gyre (NPSG) has been hypothesized to be in transition from a nitrogen (N)-limited system to one predominantly limited by phosphorus (P) as a result of a two-decade-long selection for N2-fixing organisms. In this study, the naturally occurring cosmogenic radioisotopes, 32P (half-life 5 14.3 d) and 33P (halflife 5 25.3 d), were measured and 33P/32P activity ratios we...

The effects of continuous exposure to cadmium (Cd) and ethanol on Cd turnover and zinc (Zn) and copper (Cu) body status of male Wistar rats were studied. The animals received an aqueous solution of 10% (w/v) ethanol and/or 50 mg Cd/l as the only drinking fluid for 12 weeks. The concentrations of Zn, Cu and Cd in the serum (or blood), liver, kidneys, spleen, brain, heart, femoral muscle and femu...

The development and application of new technologies in all spheres of life and work carries with it the ever-increasing pollution of the environment through harmful and toxic substances. Pesticides and heavy metals are among some of the more prominent pollutants of the environment. Heavy metals significantly contribute to human environment pollution due to the impossibility of their biodegradat...

Stable isotope ratio analysis (SIRA) of the socalled bioelements (H,C,N,O,S) and the heavy element strontium is applied for food authenticity control and for geographical origin assignment of food products since about 30 years. The first official methods eg for honey and fruit juices have been acknowledged in 1978 and 1981 by AOAC. In 1990 the EU decided to install an official database for wine...