농업인건강안전정보센터 학회발표자료 Effects of Biodegrade Pesticide Proof 외국의 Clothing 농업인 on Human 건강연구 Comfort 동향 농촌진흥청국립농업과학원농업공학부농업재해예방과 441-707 경기도수원시권선구수인로 150 ( 서둔동 249) Tel. 031 290 1938
Ⅰ. Introduction It is common circumferences to be the high temperature and high humidity in the spraying pesticide field. It could be in health danger because the farmers avoid PPE like as an acute agrichemical poisoning. So it is needed comfortable and environmentally friendly pesticide proof. The purpose of this study was to evaluate thermal comfort of pesticide proof clothing made of poly lactic acid(pla) Ⅱ. Research Methods 1. Conditions of Environment The mean climates during the field test were 32.5 and 89.5%RH. Experiment was doing in July, 2010. It was done during 30minutes without rest time. Two men in twenty randomly wore one developed clothing(pla) and on current clothing(non-woven) during the spraying pesticide in the plastic house. 2. Measurement Items (1) Human comfort test(physiological responses) Two male in twenty randomly wore one developed clothing and on current clothing during spraying pesticide in the plastic house. Heart rates(hr), rectal temperature(tre), microclimate inside clothing(tcl, Hcl) and personal subjective sensations were measured for 60 minutes. But after 10 min, their sensors for rectal temperature fell out from uncomfortable position. (2) Pesticide exposure test(patch test) - head, chest, back, right upperarm, right forearm, left thigh, left calf 3. Designing of the Experimental Clothing Figure 1 shows schematic illustration of developed pesticide proof clothing. PPC designed two-piece style was made of poly lactic acid(pla). Upper wear was made of nano-coated fabric. Lower was made of water-proof coated fabrics.
4. Conditions of Test Figure 2 shows that wearing PLA and Non-woven pesticide proof clothing the subject was spraying pesticide in vinyl greenhouse. Fig. 1 Schematic drawing of PLA pesticide proof clothing Table 1. Testing results of protective clothing for pesticide Testing items Testing Methods Upper Lower Material (%) KS K 0210-1 PLA 100 PLA 100 Weight; g/ m2 86.6 101.5 Force strength (warp/weft);n 108.9/129.7 203.5/168.1 KS K 0520 Tensile strength(warp/weft);% 13.4/18.2 13.0/10.3 Water resistance of cloth High range; kpa KS K 0592 19.6 258.9 Low range; cm H 2 O KS K 0591 28.0 36.0 Water-vapor resistance(ret); m2 pa/w ISO 11092 3.4 351.9 Surface wetting resistance; level KS K 0590 1 3 Experiments were consisted of two different clothing such as the current work clothing(pet) and the developing work clothing made of PLA. Fig. 2 Pesticide spraying in vinyl greenhouse
Ⅲ. Results 1. Human Comfort Test Table 2 shows mean value of physiological responses and significance of each measurement. Fig. 3 showed the results of heart rate in the filed test for 30 min in the statistics. Data of the developed clothing(pla) was lower than the current clothing. Type PLA Non-woven t-value Heart-rate(beats/min) Microclimate Temperature inside clothing(t cl ; ) Microclimate Temperature inside clothing(h cl ; %R.H.) Table 2. Physiological responses 114.63 121.26 ±12.06 ±18.72-2.34 * 27.02 27.96 ±3.10 ±2.55-1.84 N.S. 88.42 90.94 ±9.02 ±8.62-1.42 N.S. (bpm) 130 125 120 115 110 105 100 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 PLA Non-woven Fig. 3 Heart rate Fig. 4 showed the results of micro-climate inside clothing. Micro-temperature inside clothing was low in developed clothing(pla) until 30 minutes work and then it was changed to higher than new developed clothing. Also, micro-humidity inside clothing of developed clothing(pla) was lower than current clothing(pet).
( μg / cm2 /30min) 농업인건강안전정보센터 2. Pesticide exposure test Fig. 4 Microclimate inside clothing(t cl, H cl ) Table 3 and Fig. 5 showed the results of concentration of pesticide in TLC paper with types of pesticide proof clothes. In PET clothing, pesticide was detected in part of thigh and calf. 0.005 0.004 0.003 PLA Non-woven 0.002 0.001 0 head chest back upper-arm forearm thigh calf Fig. 5 Microclimate inside clothing(t cl, H cl ) PLA Non-woven Head N.D N.D Chest N.D N.D Back N.D N.D Upper -arm N.D N.D Forearm N.D N.D Thigh N.D 0.0003959 Calf N.D 0.0046623 Table 3. Concentration of pesticide in TLC paper ( μg / cm2 /30min)
Ⅳ. Conclusion 1. Human Comfort Test Change of clothing microclimate was inhibited more effectively in pesticide proof clothing made of PLA. Level of heart rate was lower in PLA than PET significantly. Subjective comfort sensation was more excellent in PLA than PET except thermal sensation. 2. Pesticide exposure test In seven parts of attached TLC paper in pesticide proof clothes, pesticide was not detected in PLA pesticide proof clothes. But in PET clothing, pesticide was detected in part of thigh and calf. This study was established the pesticide in pesticide-proof clothes after the work of spray with pesticide to investigate the influence of washing. Thus, it was concluded that pesticide proof clothing made of PLA could reduce thermal stress and safe during the spraying of pesticides in summer and environmentally friendly due to the 100% biodegradable.