Mining has long been an important source of environmental mercury levels. Weather events
and anthropogenic processes can contribute frequently to the release of mercury through
flood and soil erosion and increase its bioavailability: within the biogeochemical cycle
mercury found at elemental state, Hg, can be oxidized to inorganic mercury, Hg (II), and
then methylated during biotic and/or abiotic processes to form methyl mercury [1]. The
chemical affinity of the mercury to the –SH groups, found in protein molecules, determines
an inhibition of enzymes’ activities which causes serious damage to basic metabolic
reactions. Mercury and its compounds are considered health hazard [2]. The intense public
concern about environmental mercury contamination generates a significant number of
scientific papers focusing on the determination of mercury and its compounds. Excellent
reviews on mercury speciation [3] and determination [4$6] have been published in recent
times. Based on the chemical recognition between mercury and –SH groups numerous
analytical methods employed for the determination of mercury by means of organic
reagents containing –SH moiety have been described [7]. Of late, compounds like
thioamides have been studied extensively and their abilities to form complexes with various
cations have been reported [8,9]. Our research groups have focused on the chemistry of
thioamides and N, N disubstituted thioamides and our results have been reported in previous
paper [10,11]. This one presents a spectrometric study concerning the complexation of