At the same time , solid - phase microextraction ( spme ) as a new solvent - free extraction technique in sample preparation appeared in early 1990s . because of its advantages of simplicity , rapid extraction and easy quantification , spme was successfully applied to extraction and concentrating of many compounds in environment , food , biological fluids and pesticide matrices , the samples included gas , liquid and solid . spme could be easily utilized with gas chromatography ( gc ) and high performance liquid chromatography ( hplc ) 固相微萃取( spme )是由pawlisayn在1990年提出的一种新型的无溶剂样品处理技术，在与气相色谱( gc ) 、高效液相色谱( hplc ) 、毛细管电泳( ce )以及紫外光谱( uvas )等联用后，广泛应用于水、土壤、空气等环境样品和血、尿等生物样品，以及食品、药物等样品的分析测定。
These leds light sources are not only adjustment and uniformity but also smaller , less expensive , required less power , generated less heat . especially , the pattern of the construct both aggregate and desegregate in design was to realize different light intensity illumination on same biology sample at the same time . the selectivity , work efficiency and experiment veracity have been improve greatly 该系列光源除了具备光强可调、分布均匀优势外，还具有波长、波峰宽适宜，以及小巧、价廉、能耗低、发热少等特点，尤其是该生物光源在设计时采用的单元组装模式，使得不同强度的光照能够在同一批生物样品上实现，大大拓宽了生物实验的可选择性，提高了工作效率和实验准确性。
The homogenizer can be widely used in the homogenization of animal tissue , biological sample , foodstuff and cosmetics , especially used in the preparation of micro - organic test sample , featuring soft homogenization with no pollution , no damage , no temperature - rise , no sterilizing treatment to the sample and no need to wash the utensils 该均质器广泛用于动物组织、生物样品、食品、化妆品的均质处理，特别适合于微生物检测样本的制备，具有均质柔和、样品无污染、无损伤、不升温、不需灭菌处理，不需洗刷器皿的特点。
This paper summaries the implementation of quality assurance programme for environmental radiation investigation around tianwan npp . it includes training and examination of people , traceability of data and instrument calibration , sampling , and quality control in the lab and data process etc . finally , some suggustions are proposed 总结了田湾核电站外围辐射环境监测中的质量保证实施情况,包括:人员培训和考核,仪器设备溯源,样品采集、运输、贮存及生物样品前处理的质控,样品分析和现场监测的质控,数据的记录处理和管理要求等,最后提出几点建议。
