BRAN+LUEBBE IN PROCESSIONG-MONITORING AUSTRALIA'S NORTHERN WATERS

研究了用AA3型连续流动分析仪测定土壤和植物全氮的方法。结果表明，根据待测溶液中硫酸浓度调节缓冲溶液中NaOH 的量，保持反应pH在适宜范围，利用连续流动分析仪能够准确地测定土壤和植物中的全氮含量，与蒸馏滴定法的测定结果相比无显著差异，标准曲线相关系数达0.999以上，平均回收率为97.8 ～l02.3 ，土壤和植物待测液中NH4+ -N含量的检出限分别为0.033 7和0.01 6 5 mg／L。

Field validation of modeling predictions for the new sanitation system of the Bay of Santander were carried out through the implementation of an objective-oriented Environmental Monitoring Program (EMP), which enclosed the control of water bodies, quality of sediments and ecological status of benthos communities in the areas affected by continuous (outfall) and sporadic (combined sewer overflows) discharges. Surveillance of salubrity of bathing waters, aesthetic deterioration, trophic status of the coastal and estuarine water bodies, benthic pollution effects and bioaccumulation were some of the preliminary environmental objectives adopted by the EMP. However, because of the adaptive design of the monitoring programs, case-specific modifications were introduced. In agreement with the predictions of the environmental design of the sanitation system, no significant effects of the outfall discharges in the quality of water, sediments and biological communities were detected and the recovery of estuarine ecosystems has already been initiated.