Each governorate consists of municipalities that varied in number depending on the number of towns or villages and the population of each. For administrative purposes the area has been divided into five regions: North, Gaza, Middle, Khan Younis and Rafah. The present paper reports analytical results for some rare metals (Rb, Zr, Ti, Tl, Sb, Sc, Y), and rare earth metals (La, and Ce) which have no maximum allowed concentrations by WHO or any other regulation agencies.įirst, Gaza Strip is a strip of land on the eastern coast of the Mediterranean Sea, located in the Middle East (at latitudes 31˚16"N and 31˚45"N and longitudes 34˚20"E and 34˚25"E) bordered by the Mediterranean Sea in the West and the Negev Desert and Egyptian Sinai Peninsula in the South with a total area of 365 Km 2. This work is a continuation of a previous work where metal contamination of the harvested rain water of Gaza strip in Palestine was assessed by analysis of different heavy metals (Ba, Cu, Zn, Co, Mn, V, Al, Pb, Cr, Ni, As, U, and Cd) and results showed that 8 trace metals is higher than the allowed WHO limits in drinking water. These metals may enter the human body via different routes and including water. Heavy metals are well known to be toxic to human beings as they are not metabolized by the body and so accumulate in the soft tissues. From the rare metals analyzed in this study, antimony Sb, cerium Ce, thallium Tl, which are heavy metals, are of concern because of occupational or residential exposure. The ICP-MS allows one to obtain complete information on the trace elements occurring in water, including those present in sub-ppb concentrations.ĭrinking water contamination with metals is important environmental issue as some are toxic even at low concentrations. Inductively coupled plasma-mass spectrometry (ICP-MS) is particularly suitable for this purpose due to the possibility of rapid multielement analysis in combination with excellent detection limits. The advances in analytical techniques facilitate the application of the hydrochemical fingerprint concept. Therefore, it is reported that the concentrations of rare metals in water have been increased as a result of human and anthropogenic activities. Occurrence of metals in water is sensitive to anthropic influences. water-water and water-rock interactions, contamination processes, etc. Water analysis is applicable also to the study of water origin and evolution, taking into account the natural and anthropic influences, e.g. Water analysis plays a decisive role in regulations that determine the water quality levels for different uses e.g., for drinking water. The importance of water for man makes management of this natural resource a priority in order to preserve its sustainability. Study area, harvested rain water is a main source of their water supply. Have no maximum allowed concentration, and the fact that for many people in the Population of the study area given the high concentration of some metals that The results obtained from this study suggest a possible risk to the The 43 samples, and all of them were detected in all water samples analyzed in Metals detected in the collected harvested rainwater vary significantly between 43 water samples were collected in November 2012 during theįirst rain from house wells and rain water pools. This study was conducted toĭetermine the water quality of harvested water which is used for drinking in Their control should be therefore controlled in water to monitor theirĬoncentration in water (ground, harvested, etc.). These metals usually have no maximumĪcceptable limits as there is no sufficient data about their toxicity to human November 2012 were analyzed for different rare metals (Rb, Zr, Ti, Tl, Sb, Sc, Water samples harvested for drinking and agriculture from Gaza collected in NWS Precipitation Image overlays are provided by the National Weather Service. USGS rain-gage data shown in the table are available at Water Data for the Nation : Current Missouri Precipitation “ – – ” Parameter not determined, usually due to missing data.The "no data" icon is the result of an NWISWeb status code: The colored portion of the icon will represent the precipitation amount for that time interval. Half colored icons designate gage data that appears to be logging correctly but is over 1 hour and 15 minutes older than the NWISWeb time stamp at the top of the Rainfall page.Hourly and Daily values are calculated from the last time a gage value was updated, which is not necessarily the time this web page was updated. * For precipitation values less than 0.01 inches, the USGS gage symbol is white and the NWS overlay is transparent. Legend colors apply to both USGS gage and National Weather Service precipitation overlays (at full opacity).
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