本研究探討全國作業環境測定數據之內容，暸解作業環境中各類化學物質之暴露量測結果。研究結果為國內第一篇完整揭露全國年度環測數據資料之分析報告。環測數據蒐集過程與步驟包括:(1)環測數據資料庫之建置、(2)資料欄位格式設計與查驗、(3)環測數據 資料取得及規範、以及(4)數據管理與統計分析。本研究匯整2005�2008年間，由認可實驗室主動申報之環測數據，共收集20，794份電子報告，其中包含212，644筆數據(2005.01� 2008.01)共655種化學物質。進一步與歷年“勞工作業環境空氣中有害物容許濃度標準\" 進行比較，發現有2，477筆環測數據超過法令標準，約為可比對總資料量(n=191，734)之1.29% ' 54.59%為低於檢量下限的ND資料。超過容許濃度標準之前十項化學物質(數量) 分別為:第四種粉塵一總粉塵(344)、第一種粉塵一呼吸性粉塵(283)、甲萃(247)、第一種粉塵一總粉塵(230)、鉛及其無機化合物(194)、環氧乙院(170)、N，N-二甲基甲瞌胺(139)、乙二醇乙瞇醋酸醋(87)、第四種粉塵一呼吸性粉塵(78)、甲醒(66)。本研究成果可協助職業衛生師、學術單位研究學者與政府相關部門，搜尋更多有價值的資訊，以及暴露實態之掌握，以利未來建立更完整的職業暴露資料庫。

Thisstudy presents the workplace monitoring database from 2005 � 2008 in Taiwan. Itwas the first investigative result to reveal the complete workplace monitoring measured data. Four steps were taken to establish this database; they are: (1) establishment of workplace environmental monitoring database， (2) data field format designing and inspection， (3) data acquisition and norms， and (4) data management and statistical analysis. A total of 20，794 batch files were uploaded by certified occupational hygiene analysis laboratories， expressed in the number of 655 chemicals and 212，644 measured pieces of data (Jan， 2005 ~ Jan， 2008 for the sampling date). The results showed that， there was a 1.29%data record (n=2，477) higher than TWA-PEL， and 54.59% of data records showed under calibration. Thetop 10 chemicals can be detectable and above TWA-PEL were: (1) the fourth type particle (nuisance dust)-total dust (n=344)， (2) the first type particle (with above 10% Si02)-inhalable dust (n=28)， (3) toluene (n=247)， (4) the first type particle (with above 10% Si02)-total dust (n=230)， (5) lead and related non-organic compounds (n=149)， (6) ethylene oxide (n=170)， (7) N，N-Dimethylformamide (n=139)， (8) ethylene glycol monoethyl ether acetate (n=87)， (9) the fourth type particle (nuisance dust)-inhalable dust (n=78)， (10)formaldehyde (n=66). The results may be helpful to occupational hygienists， academic researchers， and the government to seek more information and exposure profile for building a complete nationwide exposure database， in the future.