1. INTRODUCTION Environmental assessment has multiple scheme [1][2]. The assessments for environmental acts implementation in the higher planning processes than project level is particularly categorized as strategic environmental assessment (SEA) [1]. Then, the conventional environmental impact assessment (EIA) functions under the SEA at project level [2]. It is clear from the viewpoint of environmental decision- making processes, in the sense that as one move down the hierarchy from policies, plans, program (PPPs), and then to project, the nature of decision-making has prescribed specifications [2]. There in the water matters, standard methods for water quality analysis [3] have been main technical procedure for EIA under such object specified conditions. On the other hand, even though SEA at higher PPPs process has unique function to enhance more useful problem prospecting and effective environmental programs-projects development [1][2], however the methodologies for suitable water quality monitoring for SEA are still on a development process [4][5]. Hence, technical development for strategic water quality assessment for SEA has been focused on in this study. Elevated levels of phosphorous in conjunction with nitrogen can negatively affect aquatic ecosystems in many ways in terrestrial fresh water bodies [6][7]. The increased growth of algae and aquatic macrophytes and distinct shifts in species composition are a prominent symptom of eutrophication [8]. These blooms generally contribute to a wide range of water quality problems including summer fish kills, foul odours, and tainted drinking water. Furthermore, certain cyanobacteria produce and release toxins that can kill livestock and may pose serious health threat to humans. To monitor phosphorous and nitrogen concentration of environmental water is important [6][7]. From another view point in general environmental water quality monitoring, the measurement of common anions (SO 4 2- , Cl - , and NO 3 - ) and cations (Na + , K + , NH 4+ , Mg 2+ , and Ca 2+ ) found in environmental water is essential for some environmental waters including rain, lake, underground, and river water [9]. Ion Chromatography (IC) have been recognized to be very useful approach for the determination of anions and cations, and Flow Injection Analysis (FIA) is also very fundamental for environmental chemistry. Herein an integration of IC and FIA was examined on analysis for phosphorus, inorganic nitrogen ions, other common anions and cations analysis by only one vial of 2mL onsite filtered sample as a convenient multi-parameter water quality analysis. 2. Experimental 2.1 IC-FIA integration IC-FIA integration was performed on a TOSOH model IC2010 equipped with the following devices: vacuum degasser, double plunger pump that capacity is 6uL x 2, column oven, auto sampler of capacity 150-300 samples, and conductivity detector (TOSOH, Tokyo, Japan). The integration with FIA was proceeded by modification of merging process of double plunger pump by installing a 1-2, 3 switching valve (Fig. 1). Applying 1-2 position of the switching valve, eluent from double plunger pumps were merged before sample injector as conventional IC system. Then, applying 1-3 position of the switching valve, a plunger pump sent carrier and a sample segment was injected in the carrier flowing, and reagent sent by the other plunger pump was merged after the sample injector. Whereas, injected sample and reagent were merged for every 6uL alternately. ABSTRACT A new approach for ecosystem level water quality prospecting was examined. Full-automated Ion Chromatography system (TOSOH IC2010) was modified for integration with Flow Injection Analysis. 13 of 2mL samples were collected after onsite filtration by 0.45um syringe filter from river in UTM Johor campus, representing common human impacted river environment, on 24 February 2012. Then four analytical modes were applied for standard solutions and the environmental samples. The detection limit that was signal-noise ratio three in μM/L were as follows, SO 4 2- (0.31), Cl - (0.50), NO 3 - (0.89), Na + (0.52), NH 4 + (0.94), K + (1.24), Mg 2+ (0.76), Ca 2+ (1.75), NO 2 - (0.02), and PO 4 3- (0.12), and its EC was 0.03 μS/cm. Comparing these values with water qualities of environmental samples, our analytical approach was satisfactory. The onsite filtration drastically improved the sampling process as simple, and μM/L level analyses were obtained by only one equipment with 2mL sample. This analysis can be extend to COD, total nitrogen/ phosphorous, and etc, which will contribute strategic environmental assessment due to rapid delivered, low-cost, and integrated data. Keywords: Flow injection analysis, Ion chromatography, Strategic environmental monitoring. A Multi-parameter Water Quality Analysis by Onsite Filtered 2mL Sample to Monitor Urban River Eutrophication Akira Kikuchi 1 , Nor Eman Ismail 1 , Narges Janalizadeh 1 , Musa Mutah 1 , and Muhamad Faiz 2 1 Faculty of Civil Engineering, Universiti Teknologi Malaysia, 2 SAJ Holdings SDN. BHD. Johor Malaysia Second International Conference on Geotechnique, Construction Materials and Environment, Kuala Lumpur, Malaysia, Nov. 14-16, 2012, ISBN: 978-4-9905958-1-4 C3051