2-(4-biphenyl)imidazo[1,2-]pyrimidine-3-hydrazone (BIPH) is synthesized and used as a new complexation analytical reagent in quantitative determination of copper ions, a yellowish green complex is resulted from this reaction. At the beginning, the reaction conditions were optimized at 430 nm which is the maximum wave length () of the complex. The linear concentration range is 0.05-500ppm and the limit of detection is 0.122 ppm. To test validity of this determination method, it was applied on samples with different matrix, and copper ion concentrations such as life samples of urine, tap water, wastewater and industrial samples of 4%copper alloy and 99%copper alloy. Standard addition method is also used to avoid matrix effect on analytical results. In application of suggested method, the values of relative error were (-4.536)-2.071% and values of recoveries were 95.46-102.07%. The high stability constant of resulted complex (K=0.25×10 8 ), and the simplicity in procedure of complex preparation, both provided us a motivation to prepare complex, and to study some of its characteristics by performing the identified analyses such as FTIR, UV-Visible spectroscopy, SEM+EDX, conductance measurement, reflectance percent R% to enrich the proposed structure of complex.

Nitro Schiff base ligand of 2-(biphenyl-4-yl)-3-((2-(2,4-dinitrophenyl) hydrazono) methyl) imidazo [1,2-a] pyridine (BDNHMIP) was synthesized, identified and used in spectrophotometric determination of Co(II) at 530nm. The suggested method of Co(II) determination was performed at optimum analytical parameters of 3.2 ml/min flow rate, 137.4 L ligand volume, 98.1 L Co(II) volume, 1minutes residence time in reaction coil, and as a result 48 sample/hour of method throughput was accomplished. The proposed method performed linearity of 25-400 ppm, molar absorptivity coefficient of 121.570410 3 L.mol. 1 cm 1 , and L.O.D of 2.28ppm. The suggested method was successful applied for determination of Co(II) content of vitamin B 12 injection samples with high recovery of 99.5-100.3% and minimum relative error percent of-0.3-0.5%.

<p>There are many direct and indirect methods of measuring the volumetric ratioof red blood cells relative to sample size and total blood, but the manual carcinogenic method remains the most stable and least expensive method despite the possibility of human error.The ratio percent of the packed red blood cell volume to the total volume of the blood sample is known as the packed cell volume (PCV). Our efforts were directed at finding a precise and economic method for PCV determination. There by, we designed a simple device consisting of a digital camera that is connected to a computer which uses a specific MATLAB program to process the blood images. As a result,the image can be read and the PCV can be calculated using a special code system. This new measuring system provides the capabilities and advantagesto frequently comment on measured PCV with normal or abnormal, in comparison with normal values of PCV, which are stored in the computer. Our measurement method provides accurate results compared to the ruler results to alleviate the effort of clearing the hepatitis C virus from the blood (PCV). This system enables a swift and simple sample analysis and PCV identification.</p>

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