• The response type and design strategies of fluorescent probes for Hg 2+ sensing are reviewed. performance analysis described in detail. applications detection biological environmental samples summarized. challenges prospects proposed. Orienting new expanding recommended. Environmental pollution problem, especially mercury ions (Hg ) pollution, seriously threatens the organism health. Numerous...

Mercury resistance is found in many genera of bacteria. Common amongst enterobacteria are transposons related to Tn21, which is both mercuric ion- and streptomycin-/spectinomycin- and sulphonamide-resistant. Other Tn21-related transposons often have different antibiotic resistances compared with Tn21, but share many non-antibiotic-resistance genes with it. In this article we discuss possible me...

A colorimetric and fluorometric dual-model probe for mercury (II) ion was developed employing fluorescein hydrazide (FH) in ethanol-HEPES solution (1:1, v/v, pH 8.0). The probe exhibited high selectivity and sensitivity for Hg detection using UV/Vis and fluorescence spectroscopy. Addition of Hg caused a visual color change from colorless to coloured and a fluorescence change from colorless to b...

ion6. Population connected to wastewater secondary treatment systems7. Biochemical oxygen demand in riversSub-theme: MARINE ECOSYSTEMS8. Concentration of mercury in fishand shellfish*9. Size of fishing fleet Sub-theme: LAND USE10. Land use change*, by category(proxy: Built-up areas) 11. Forest increment and fellings12. Forest trees damaged by defoliation 13. ...

Two hundred and one strains of Staphylococcus aureus isolated from in-patients and out-patients were examined for sensitivity to antibiotics, heavy-metal ions and ethidium bromide and for phage-typing pattern. Heavy-metal ion resistance was less frequent than reported in previous studies and was as frequent in penicillinase non-producing as producing strains. 'Methicillin-resistant' strains wer...