目前我國具有健康危害性化學品管理方式係以化學品需分級並實施管理方式進行。因現行所採之管理制度係參考國外制度而非依國情狀況設計，故本研究試圖擬定一套適合我國危害性化學品分級管理之改良建議方法。
本研究係以37間化學品使用實驗室中，常見且具容許暴露標準，但非法定監測項目的氫氧化鈉和乙醇為研究對象，結果顯示，氫氧化鈉實際監測濃度在2.0×〖10〗^(-2)~7.8×〖10〗^(-2) mg/m^3；依作業場所無通風推估模式推估計算結果其濃度介於1.2×〖10〗^(-2)~3.0×〖10〗^(-1) mg/m^3之間；二區域混合模式推估計算結果則顯示近場濃度在0.3～0.9 mg/m^3 ；遠場濃度1×〖10〗^(-3)~6×〖10〗^(-3) mg/m^3管理等級為第一級管理。乙醇實際監測濃度為6.7×〖10〗^(-2)~58.0 ppm ；飽和蒸汽壓模式結果，濃度為58.3 ppm ；二區域混合模式計算結果近場濃度在介於9.6~26.4 ppm之間；遠場濃度在則介於5.2×〖10〗^(-2)~〖9.6×10〗^(-2) ppm之範圍，相對應的管理等級為第一級管理。但以CCB分級管理方式，氫氧化鈉相對應的管理等級為第二級管理、乙醇相對應的管理等級為第一級管理，改良版-危害性化學品評估及分級管理技術方法均為第一級管理。顯見CCB分級管理方式有高估數值跡象。建議可以使用本改良版-危害性化學品評估及分級管理技術方法來修正。 At present, the chemical management method in Taiwan requires all chemicals to be classified and implemented in a control banding manner. Due to the current management system adopted in our country is designed with reference to foreign systems rather than national conditions. Therefore, this study attempts to develop a set of improved recommendations for the classification management of hazardous chemicals.
The research used by thirty-seven chemical laboratories, with allowable exposure standard, but not a monitoring item of legal. The result shows that monitoring concentration of Sodium hydroxide is between 2.0×〖10〗^(-2)~7.8×〖10〗^(-2) 〖mg/m〗^3. The result of Zero Ventilation Model method between 1.2×〖10〗^(-2)~3.0×〖10〗^(-1) 〖mg/m〗^3 . The result of Two-Zone Model method with Near-field concentration is 0.3～0.9 mg/m^3 〖mg/m〗^3, Far-field concentration is 1×〖10〗^(-3)~6×〖10〗^(-3) mg/m^3, it refers on the first level management.Monitoring concentration of Ethanol between 6.7×〖10〗^(-2)~58.0 ppm. The result shows that concentration of Saturation Vapor Pressure Model is 58.3 ppm and the concentration of Two-Zone Model method are between9.6~26.4 ppm; And Far-field concentration between 5.2×〖10〗^(-2)~〖9.6×10〗^(-2) ppm, it refers on the first level management. But, according to Chemical Control Banding (CCB), the corresponding management level of sodium hydroxide and ethanol be classified second and the first level management. Improved version - hazardous chemicals assessment and grading management techniques are first-level management. Apparently, the result of Chemical Control Banding has overestimated. It is recommended that this improved version - hazardous chemicals assessment and grading management techniques be used to correct.
