Chemical analysis. Determine the amount of parent test chemical in the aqueous equilibrating solution and or- ganic solvent extractions. Use any method or combination of methods suitable for the identification and quantitative detection of the parent test chemical.
Chemical analysis. De t e r m i n e t h e a m o un t of p a r e n t t es t c h e m ic a l i n t h e a q u eo u s eq u ilib r a t i n g sol u t io n a n d o r - g a n ic solve n t ex t r a c t io n s. Use a ny m e t h od o r co m bi n a t io n of m e t h ods s u i t a ble fo r t h e ide n t ific a t io n a n d q u a n t i t a t ive de t ec t io n of t h e p a r e n t t es t c h e m ic a l .
Chemical analysis. (a) Initial standards and process Prior to 1 July 2006, the Seller will calculate the average chemical analysis for each of the Chemical Properties and standard deviation of the Shipment using a weighted average of Mine Stockpiles which have been sampled using an automatic sampler which has been designed and calibrated to either the ISO or AS standards or the historically used in-house standards (the in-house standards will not be changed without the consent of the Buyer, which consent will not be unreasonably withheld). The chemical analysis shall be determined by the Whyalla Laboratory’s XRF instrument (or equivalent).
Chemical analysis. The manufacturer shall take a test ingot during the pouring of each melt of steel used in the manufacture of plow blade cutting edges supplied under this specification. The chemical composition shall be reported to the Department for each delivery of cutting edges and for each melt represented in the shipments means of a Certified Mill Test Report of each heat of steel used. The chemical composition shall conform to the requirements set forth in the paragraph Chemical Composition below. Any shipment not accompanied by a certified chemical analysis shall be rejected and returned at the Contractor’s expense. The Contractor shall replace any blades returned with certified blades within fifteen (15) business days of notification.
Chemical analysis. Requests for developing chemical methods, sampling, analysis and reporting under this service contract will be discussed at liaison meetings between the Official Agency and the Authority. A plan for chemical testing will be developed in consultation with Official Agency for each year to include: • The development and validation of analytical methods • Analysis of samples • Participation in surveys agreed with FSAI • Additional testing as may be agreed from time to time The parameters will be agreed from the categories of substances described in this section.
Chemical analysis. Chemical analysis of the dredged material provides information about the contaminants present in the dredged material that, if biologically available, could cause toxicity and/or be accumulated in tissues. Chemical analysis of disposal site water is required for Tier II water column effects modeling. Chemical analysis of the reference sediment is required for Tier II TBP calculations, if conducted. Sediment-chemistry data alone should not be directly used to make decisions regarding the acceptability of dredged material for ocean disposal. Section 9 of the Green Book also addresses chemical analyses. A comprehensive listing of appropriate analytical methods for determining contaminants in sediments is provided in Table 3 of the QA/QC Guidance for Sampling and Analysis of Sediments, Water and Tissues for Dredged Material Evaluations (EPA/USACE, 1995). Table 1 provides guidance on the types of analyses required to conduct dredged material evaluation tests for various field collected samples. Additional QA/QC guidance is provided in Appendix G of the ITM and in QA/QC Guidance for Sampling and Analysis of Sediments, Water and Tissues for Dredged Material Evaluations (EPA/USACE, 1995).
Chemical analysis. Record shall be verified as per para 4.11 of specification: Ok/Not Ok.
Chemical analysis. The government of Telangana (duly constituted authority, Telangana State Beverages Corporation Limited) is entitled to subject stocks of Foreign Beer of more than 12 months old from the date of manufacture to chemical analysis by chemical examiner of Excise Department or any other recognized chemical examiner by drawing samples from each batch of such foreign liquor and such examination will be repeated at the end of every succeeding month (however best before date of consumption of foreign beer must be declared by the foreign liquor Suppler). The foreign beer which is reported to be sedimented or is otherwise found unfit for consumption or not conforming to the quality requirements as specified shall be drained out by government of Telangana (duly constituted authority, Telangana State Beverages Corporation Limited) in the presence of the local excise authorities after offering a reasonable opportunity to the supplier to examine such sedimented/ non-potable stocks. The empty bottles will be handed over to the supplier or his authorized representative. If the Supplier does not lift the empty bottles, such bottles shall be disposed off by government of Telangana (duly constituted authority, Telangana State Beverages Corporation Limited) and amounts so recovered shall not be paid to the Supplier. Chemical Examiners report shall be final and requests for another analysis will not be entertained. Government of Telangana (duly constituted authority, Telangana State Beverages Corporation Limited) shall not in any way be held responsible for making the payment for the cost of FL so drained out.
Chemical analysis. Water temperature, pH, dissolved oxygen concentration and conductivity were measured in the field. The pH was measured using a combination glass electrode calibrated against NIST buffer solutions. Dissolved oxygen were measured using analizator of liquids «Expert-001» with termooxymeter (Xxxxx oxygen sensor) with uncertainty of 5%. Major anion concentrations (Cl-, SO42-, NO3-) were measured by xxx xxxxxxxxxxxxxx (Dionex 2000i) with an uncertainty of 2%. Alkalinity was measured in situ by Gran titration with HCl using phenolphthalein as indicator. The dissolved organic carbon (DOC) was determined using Shimadzu SCN Analyzer (Toulouse) and Elementar TOC analyzer (Moscow) with an uncertainty of 3% and a detection limit of 0.1 mg/L. To study the spectrophotometric characteristics of the water samples directly in the field the absorption in the wavelength range 375-655 nm on photometer “Expert-003” were measured. The cartridges with working wavelengths 375, 400, 430, 470, 505, 525, 572, 590, 655 nm and the glass cell of the length 30.01 mm were used. Absorption spectra (resolution 1 nm) of the filtrates over the wavelength range 200-700 nm were measured with the spectrophotometer Specord 50 in the laboratory. Weight average molecular weights were measured by size exclusion chromatography (SEC) using chromatographic system Agilent 1100 (Agilent Technologies, USA) with diode array detector and Ultropac column TSK G2000SW 7.5x300mm (LKB, Sweden). Solution of 0.1 M Na–phosphate buffer (pH 7) and 0.1% sodium dodecyl sulfate was used as an effluent. All samples were purified from low molecular weight contaminants by elution through a Sephadex G-10 column. Calibration was made by globular proteins. Major and trace elements (TE) were measured without preconcentration by ICP-MS (7500ce, Agilent Technologies). Indium and rhenium were used as internal standards. The international geostandard SLRS-4 (Riverine Water Reference Material for Trace Metals certified by the National Research Council of Canada) was used to check the validity and reproducibility of each analysis. A good agreement between our replicated measurements of SLRS-4 and the certified values was obtained (relative difference < 5%).
Chemical analysis. Iodide permeability test Iodide permeability testing (IPT) was introduced by Xxxxxx et al (1977). This technique involves allowing enamel samples to soak in potassium iodide for a few minutes, after which the remaining iodide is recovered from the enamel using paper discs (Attin, 2006). The amount of iodide recovered in the discs is determined and provides information about the pore volume of enamel and provides sensitive information about the early stages of de- and remineralisation (Xxxxxxxxx et al., 1982) and has been shown to correlate well with measurement of calcium loss during demineralisation (Bakhos and Xxxxxxxxx, 1982). Therefore this can be considered a low cost, rapid screening technique for assessment of the early stages of demineralisation and remineralisation (Attin, 2006). Chemical analysis of dissolved minerals Using the knowledge that dental enamel consists of 34-39 % m/m (g per 100 g) calcium (dry weight) and 16-18 % m/m phosphorous (Ten Cate et al., 2008) the amount of dental enamel dissolution can be determined by measuring the amount of calcium and phosphate dissolved from the apatite crystals of dental hard tissue. Various calcium or phosphorous specific assessments have been used (de Xxxxxxxx xx Xxxx et al., 1987; Xxxxxx et al., 1989; Xxxxxx et al., 2003; xxx Xxxxxx et al., 2003) and are now well established methods for assessing early erosion in vitro, albeit as a technique that lacks information on structural changes that are occurring. Energy Dispersive X-Ray Spectroscopy Energy Dispersive X-Ray Spectroscopy (EDS) is a form of microanalysis that can be incorporated into the instrumentation of SEM or ESEM. EDS provides information about the elemental composition of the surface of the sample being investigated. Essentially, the physical principle of the technique is that each element in the sample will emit a unique and characteristic pattern of x-rays when excited by electrons of sufficient energy. Furthermore, when examined under the same conditions, the number of x-rays emitted by each element bears a direct relationship to the concentration of the element in the sample. In order to convert the x-ray emission into analysable data, the emitted x-ray is processed into a unique digital signal which contributes a single count to the appropriate channel of a multichannel analyser. After time, an x-ray spectrum is formed and processed for quantitative analysis. This processing involves accounting for and removal of outlying peaks; ide...
