| 英文摘要 |
The domestic standard sampling method usually need external power and controller. Collect a small amount of dispersive samples, and then using standard method to analyze. If the data match the quality control and quality assurance regulation, we can find contaminating source over legal regulation. However, for contaminants which concentration changing with time, we need to prolong sampling time and frequency so that we may recognize the contaminating source. It leads to heavier workload and higher expense. For ultratrace contaminants or bioaccumulating and usable toxin, we also need to prolong sampling time in order to collect detectable quantity. So the same problems happens. passive accumulation technique doesn’t need external power and controller. Besides, it can do consecutive and longtime sampling. It has been used for biological exposure risk evaluation. Therefore this proposal is to develop a technique for long time passive accumulation, including semipermeable membrane device (SPMD) and polar organic chemical
integrative sampler ( POCIS)
(1) This proposal chose the organic contaminants that usually see in factory waste water and groundwater. Provide 20 chinese paper abstract about passive accumulation. Study 25 paper which in recent years. Insure the workable of SPMD and POCIS technique. Estimate and pick the semipermeable membrane material and sequestration material. For SPMD the semipermeable membrane use LDPE and the sequestration material use pump oil, For POCIS the semipermeable membrane use PES and the sequestration material use tenax adsorbent. we successfully made SPMD and POCIS passive accumulation devices. We used it for lab expose and outside expose.(groundwater and factory waste water ). The data has same tendency between lab data and outside data. It should be mention that the device may be stolen. For some compounds that can be accumulated but not been chose. We bring up [ In water organic matter passive semi-permeable membrane sampling method draft ]. The first half of the year 99 annual plan applies SPMD (including use reagent water),POCIS. (a) Industrial district waste water is our target. Use GC-MS and LC-MS to quantitative analysis. (b) The control pollution site ground water is the object, the SPMD sampling and GC-MS examines widespread qualitative and the semi-quantitative analysis. In the second half of the year establishes the specific category source of pollution ambient air pollutant the passive form sampling technique and the application. The passive form sampling technique must apply the laws and regulations control, must have the complete confirmation data, the sampling instrument which the initial period needs, unifies provides by the sole unit, reduces the changeability.
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