Very low vapour pressure of 2,4,6 trinitrotoulene (TNT) yields extremely low vapour concentrations at different flow rates in the air, yet considerable quantity of vapours and TNT dust during handling may be present at the workplace environment which is harmful to the health of the personnel working there. The explosive vapours, such as TNT, 2,6-dinitrotoluene (DNT), etc., though harmful to the health of the personnel, are not covered either in the emission standards or in the ambient air quality standards. Presently, no instrument is available for air monitoring of TNT vapours. These vapours need to be collected on-site to estimate TNT concentration. Realising the need for real-time air monitoring of TNT, efforts have been made to understand and device an instrument for on-site determination of TNT vapours parts per billiion (ppb) range. Low-level TNT vapours and TNT buried in the soil in military operations are required to be detected. The instruments for this require careful calibration to yield accurate and reliable results. Hence, an effort has been made to develop a trace-level ppb vapour generator. The vapour generator of a spiral glass column of length 170 cm and inner diameter 4 mm 2 0.5 mm has been used. An activated charcoal glass tube has been used for sampling TNT vapours. The adsorbed TNT vapours were desorbed and analysed using high performance liquid chromatography. The solid support used has been studied. These vapours generated at different flow rates have been evaluated. The calibrated instrument can be used for in situ and on-site analysis of samples of TNT and also for samples collected.

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To evaluate the effect of herbal lysine supplementation on performance of broiler chicken, a study was conducted on 200, one day-old commercial broiler chicks randomly distributed into 20 subgroups means five dietary treatments with four replicates per treatment and each replicate had ten birds. Feeding trial was conducted for 42 days. The control group (T1) was offered maize-soybean meal based diet without lysine while in second group (T2) basal diet was supplemented with 100% synthetic lysine. In T3 group basal diet was supplemented with 50% herbal + 50% synthetic lysine, while in T4 with 100% herbal lysine and in T5 with Herbal lysine at 50% Higher Level Than T4 group. Feed intake (g/bird), body weight gain (g/bird) significantly (P< 0.05) increased in T4 group as compared to the non supplemented group (T1). Feed conversion ratio was significantly better with herbal lysine supplementation as compared to synthetic lysine and the control. Dietary supplementation of herbal lysine resulted in slightly higher dry matter metabolizability, gross energy metabolizability and nitrogen retention as compared to control group. Thus, it can be concluded that supplementation of herbal lysine at 100% level was found to improve the growth performance in terms of body weight gain, feed conversion ratio, nutrient metabolizability and achieving profitable poultry production.

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