iCAP7400 ICP-OES for the determination of trace elements in copper and copper products
Copper, a raw material for producing generators, cables, circuit boards and other electrical equipment and heat exchangers; and copper alloy bearings, gears, watch parts, arms shell, Precision Valve, marine propellers precision springs and electrical contact elements It is widely used as a manufacturing material for manufacturing precision electrical instruments, varistors, precision resistors, thermocouples, etc. It can be seen that based on the difference of application fields such as pure copper and copper alloy, it is possible to accurately control and accurately measure the content of alloying elements and impurity elements added in various copper products, which has important guiding significance for product quality control and safety of use. In copper-based atomic emission spectrometry, although copper is not a typical rich-line spectral element, it still contains about 300 emission lines at 180-800 nm, especially 180-350 nm is a concentrated area of ​​copper lines. Most of the impurity control elements are in the spectral region , which will be affected by the adjacent matrix interference and cross-level spectral interference caused by severe matrix effects for impurity element analysis. Blue box for all copper emission lines Accurate measurement, Thermo Flying has new tricks! iCAP 7000's excellent optical system design, using a two-dimensional dispersion system with fully fixed spectroscopic elements, with a large grating constant and blaze angle, high resolution guarantee in the case of high luminous flux, combined with non-destructive CID NDRO spill proof reading and anti-Blooming technology, various impurity elements beneficial to obtain good signal to noise ratio index zui under the coexistence of a base, reducing the matrix effect of the product analysis, the sample is no need for a standard method of CPC Accurate measurement of trace elements in copper and copper products can be achieved by precipitating and enriching trace elements or by physically removing copper. Sample preparation Accurately weigh 1g sample (accurate to 0.0001g) in a Teflon beaker, add 10mL mixed acid to dissolve the sample under 180°, until the sample is completely blue and transparent, and dilute to volume with ultrapure water. In a 50 mL HDPE volumetric flask, shake well and test the solution, and prepare reagent blank according to the same method. The cathode copper is measured by the standard addition method, and the copper rice, the anode plate and the copper wire blank are subjected to a matrix matching standard curve method. Instrument parameters and configuration Detection limit test According to the JJG-768 instrument verification specification, the experiment selects 11 consecutive reagent blank tests, and uses the standard deviation of 3 times of 11 consecutive blanks as the method detection limit. The detection limits of each element are as follows: Sample result iCAP 7000Series ICP-OES is a market demand model for modern high-end spectroscopy instruments. The optical components adopt a two-dimensional cross-dispersion design of step grating and prism in the all-solid structure. The optical chamber part adopts high precision temperature of 38±0.1°C , all plasmas. The gas is a surface-array solid-state CID detector consisting of a mass flow controller (control accuracy of 0.01 L/min) and a 291,600 pixel unit. These designs undoubtedly represent the current high-end design techniques of Zui. Based on the design of these technologies, the iCAP 7000 ICP-OES guarantees unparalleled stability, good sensitivity and spectral interference. The multi-measurement precision of the main element that can be effectively detected can be controlled within 0.1%, and the instrument has excellent continuous operation stability index, which can ensure the reliability and repeatability of the measurement result to a large extent. Scan the QR code below to get a full-scale solution from Thermo Scientific, or follow the “Semerfly Chromatography & Mass Spectrometry China†public number for more information + Frozen Shelled shrimps,Frozen Bamboo shrimp,Frozen Red shrimp Zhejiang Ocean Family Co., Ltd., , https://www.ocean-family.com
