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5th Mission Report _KE3_March-April 2013remotely. This latter one may only be suitable for taking marine samples. It was recommended thatall these should be investigated further in the JFS.vi.vii.One of the samplers smoked during the procedures, ideally this should not be allowed, as thesmoke particles could contaminate the samples, especially the organic ones. It is recommendedthat the samplers should be advised about this problem.Finally the KE3 commissioned a portable turbidity meter, which had never been used for 6 years.The sampling staff were trained on its operational method and afterwards obtained satisfactoryresults as NTU and FTU units.OCP AnalysisThe Chromatography Department analyse the 25 parameters recommended by the StockholmConvention in water and soil and these include the OCPs. The Department is currently using GOSTstandard methods, which give satisfactory results, however to assist with further method developmentthe KE3 submitted three other international methods as requested.The extraction phase is carried out by using a liquid/liquid extraction technique using hexane and for thesoil a similar technique but also using acetone in the hexane.The concentration phase uses a rotary evaporator. It was noted that with soil samples 1 ml of iso-octaneis added to the hexane to reduce losses from volatile components.The clean up phase uses Sulphuric Acid, as per the method, however this affected the recoveries of Aldrinand Endrin, therefore the Department now used silica gel or alumina columns.The Department previously used Isodrin as an internal standard, which was effective to calculate recoverylosses for each sample. Unfortunately, the Department has depleted this standard and it is recommendedthat this standard is obtained by the project to complete the training for the JFS.The chromatographic phase is carried out by using an Agilent GLC (7890A) and Mass Spectrometerdetector (5975C) with a DB5 –MS 30 m X 0.25 X 0.25µm capillary column.The results appear satisfactory indicated by the application of internal AQC charts.On-line Monitoring SystemsThe Department had been funded to install two online monitoring stations for Temperature, pH, EC, DO ,turbidity and level on the River Prut. Unfortunately one is no longer operational and the other cannot beused as it proved too expensive to maintain and operate. However, Hydromet believe that such systemsare important in protecting the quality of the River Prut especially in monitoring the transboundaryregions.Hydromet recently undertook a new hydrology project (funded by the Czech Republic) which included theinstallation of a number of hydrology stations to measure flows and levels along the River Prut. Thesestations consisted of bridges or platforms that suspend the sensors in the river. This system has extraspace for 18 more sensors for water quality measurements and could also include very useful sensorssuch as for petroleum products and ammonia, especially for water bodies at risk. It is recommended thatthe project investigates these monitoring points during JFS with a view to fund the renting of such sensorsat locations at WBs at risk as a trial, as a pollution control measure.Page 6 of 23