Pesticide residue analysis in citrus oils is very important for their quality and marketing. This study assessed the reliability and sensitivity of enzyme-linked immunosorbent assays (ELISA) for simazine and cypermethrin screening in orange oil. Simazine was analyzed after extraction of the oil with methanolic phosphate buffer with a limit of quantitation (LOQ) of 40 microg/L for 1-fold and app...

Recently, the subject was taken up by the first author, who confirmed the results about Simetone (VAN STEEKELENBURG, 1961) and extended them. The results described in the following sections are based upon this recent work. The substituted ureas and the symmetrical triazines are two special and important groups of herbicides. These compounds are taken up by the roots, transported via the xylem a...

Phosphatase activities (cell-bounded phosphatases "BP" and freely dissolved phosphatases "D P") in water samples from a natural lake "Laguna Grande" (Antequera, Málaga, Spain) amended with 50 microg/ml of selected insecticides, herbicides and fungicide captan were studied under laboratory controlled conditions (temperature and agitation). Our data show that dissolved alkaline phosphatase was th...

As part of the Endis-Risks project, the current study describes the occurrence of the chlorotriazine pesticides atrazine, simazine and terbutylazine in water, sediment and suspended matter in the Scheldt estuary (B-Nl) from 2002 to 2005 (3 samplings a year, 8 sampling points). Atrazine was found at the highest concentrations, varying from 10 to 736 ng/l in water and from 5 up to 10 ng/g in susp...

Simazine is a selective herbicide used on various crops and non-crop sites. It is slightly to moderately toxic to fish and aquatic invertebrates, and it is highly toxic to aquatic vascular plants. Modeling of potential simazine estimated environmental concentrations (EECs) indicates that with the highest application rates, the most vulnerable soils, and a very high runoff potential, the upper t...

Solid-phase microextraction coupled with gas chromatography-mass spectrometry (SPME-GC-MS) was used to analyze two triazine (atrazine and simazine) and three chloroacetamide herbicides (acetochlor, alachlor, and metolachlor) in water samples from a midwest US agricultural drainage ditch for two growing seasons. The effects of salt concentration, sample volume, extraction time, and injection tim...

The growth responses of Phaseolus vulgaris L., cv. "Red Kidney" plants to simazine at 5 x 10~M and 5 x 10^M, kinetin at 9 x 10~M and 9 x 10~M, and the presence or absence of Rhizobium phaseoli ATCC14482, in factorial combination, were measured. The plants were analyzed with respect to the lengths of the primary-through-quaternary leaves, stem height, fresh and dry weights, number of flowers, an...

The removal of or decrease in pesticide residues soil has attracted considerable attention, due to the serious pollution pesticides soil. purpose study was explore adsorption behavior biochar on and impact degradation soil, providing a basis for remediation by biochar. Biochars were prepared via pyrolysis rice straw at high temperature (300 °C, 400 500 600 °C). individual competitive three tria...

The growth responses of Phaseolus vulgaris L., cv. "Red Kidney" plants to simazine at 5 x 10~M and 5 x 10^M, kinetin at 9 x 10~M and 9 x 10~M, and the presence or absence of Rhizobium phaseoli ATCC14482, in factorial combination, were measured. The plants were analyzed with respect to the lengths of the primary-through-quaternary leaves, stem height, fresh and dry weights, number of flowers, an...