EDTA, a common chelating agent, is becoming a major organic pollutant in the form of metal-EDTA complexes in surface waters, partly due to its recalcitrance to biodegradation. Even an EDTA-degrading bacterium, BNC1, does not degrade stable metal-EDTA complexes. In the present study, an ABC-type transporter was identified for possible uptake of EDTA because the transporter genes and the EDTA mon...

introduction: this study aimed to compare the efficacy of mtad, glyde and edta in removing the post-preparation smear layer and debris produced in apical third of curved molar root canals. materials and methods: forty extracted human maxillary first molars with curved mesiobuccal canals (30˚-35˚), similar root lengths and morphologies were divided into 3 experimental groups (n=12) and one contr...

Ethylenediaminetetraacetic acid (EDTA), when used as a main chelator for complex plant microfertilizers, causes many negative environmental effects; therefore, new compounds or use of the known to replace EDTA have been widely studied. In present study, biodegradation rate, (Raphanus sativus) growth stimulation and ecotoxicity towards Daphnia magna Chlorella vulgaris iminodisuccinic (IDS), cons...

The viable chelator-based soil washing has yet to be demonstrated on a larger scale. Soil containing 1850, 3830 and 21 mg kg?1 Pb, Zn Cd, respectively, was washed with 100 mmol EDTA in series of 16 batches (1 ton soil/batch) using the new ReSoil® technology. recycled process water 85% EDTA, producing no wastewater 14.4 kg ton?1 waste. removed 71, 28 53% mainly from carbonate fraction, saturated...

PURPOSE To determine whether it is possible to induce proliferation in the endothelium of older donor corneas by treatment of the intact monolayer with EDTA. METHODS Corneas from donors 52 to 75 years of age were obtained from an eye bank and were usually cut in quarters to increase sample size. The effect of EDTA dose (0.02-2.0 mg/ml) and incubation time (6, 30, and 60 minutes) on endothelia...

Measurements of circulating parathyroid hormone (PTH) are important in the evaluation of individuals with hyperor hypocalcemia and for the investigation of PTH function in bone and mineral disorders (1, 2). Serum may be a good alternative to EDTA plasma in the assessment of PTH status and is an acceptable alternative to EDTA plasma in the reformulated IMMULITE 2000 intact PTH (iPTH) assay. Howe...

Double disks synergy test (DDST) and combined disks test (CD) were evaluated to predict the presence of metallo-β-lactamase in 70 Pseudomonas aeruginosa isolates recovered from cystic fibrosis and non-cystic fibrosis patients. DDST(CAZ-EDTA 1 cm) and CD(IMP-EDTA) tests showed the best accuracy (94.3%). Furthermore, for other combinations, accuracy unsatisfactory was obtained.