Heavy metals (HMs) exist in nature different forms, and the more unstable form of an HM, higher its toxicity bioavailability. The content HMs stable fractions can increase significantly through stabilization/solidification (S/S) technology. Still, external environments such as freeze–thaw (F–T) cycles will affect stability directly. Therefore, a long-term F–T study S/S Pb–Zn–Cd composite HM-con...

Abstract The fractionation of 10 metals (As, Co, Cr, Cu, Mn, Ni, Pb, Se, V, and Zn) within labile fractions in shallow marine sediments collected from the coasts Sabah Sarawak, Malaysia, was evaluated. Spatial distribution revealed that coastal were approximately 10% higher metal content than Sarawak. Risk assessment code, enrichment factor, pollution accumulation index calculations used to inv...

Ag và Sn tuy không được xếp vào loại độc hại nhưng cả hai đều có những tác động tiềm ẩn đối với môi trường, hệ sinh thái vì thế việc kiểm soát đánh giá mức độ ô nhiễm của chúng vẫn rất cần thiết, đặc biệt ngày nay khai thác khoáng sản, vật liệu nano càng phát triển dẫn tới giải phóng ra lượng Ag, nhiều. Do đó, nghiên cứu này tập trung kim trong trầm tích sông Cầu – Thái Nguyên. Các dạng liên kế...

Abstract In a single sample plot, the total amount of heavy metals in soil could not necessarily reflect contents their effective states. This must be considered when attempting to determine degree heavy-metal pollution an area. present study, around molybdenum mining area Huludao, China, was surveyed and sampled evaluate using Nemerow multifactor index method. The Tessier continuous extraction...

The presented paper is intended to study the chemical behaviour of combined geogenicanthropogenic uranium content in specific stream sediments. sampling points have been chosen with respect natural conditions locality groundwater outflow from a former mine adit Považský Inovec mountain range, near Kálnica village. Besides total determination and physical-chemical characterization relevant water...

BACKGROUND The repair of the lateral or transverse facial cleft is a surgical challenge on the account of the abnormal positioning and appearance of the cleft. MATERIALS AND METHODS Over a twenty-seven year period, 22 lateral facial cleft cases were evaluated at a cleft lip (CL) and palate clinic and seven children underwent reconstruction of the lateral CL. RESULTS Twenty-two of 3187 (0.69...

Since the beginning of modern plastic surgery discipline, facial aging has been a significant interest to plastic surgeons. One turning point for aesthetic surgery was the recognition that facial aging is more than skin deep and that any attempts at facial rejuvenation must address the subcutaneous connective tissue (i.e., fat, fascia, and muscle) [1-3]. Having been exposed to Tord Skoog’s pres...

Two sequential extraction procedures (the former proposed by the Standard, Measurements and Testing-SM&T-program of European Union and the latter derived from those of Tessier and Forstner with various modifications) have been compared, by analyzing a reference material (CRM 601) certified for the content of heavy metals in the three solutions resulting from the SM&T procedure. Scanning electro...