This work describes the methods and procedures used to determine the wavelengths of minimum spectral transmittance of holmium oxide (Ho103) in perchloric acid (HC104) solution in the …

2023年11月23日 · Preparation of Holmium Perchlorate: Weigh accurately about 400 mg of Holmium oxide. Transfer into a 10 mL volumetric flask containing 5 mL of 1.4 M Perchloric …

2022年2月2日 · CHEMICALS: 1.4M perchloric acid, holmium perchlorate solution. STEP 1: Dissolve 1 gram of holmium oxide in 1.4M perchloric acid with the aid of heating on water …

2021年9月8日 · Learn the calibration process of the UV/VIS spectrophotometer which includes control of wavelengths using holmium oxide, resolution power using toluene in hexane, control …

Take the UV spectrum of 4%w/v Holmium oxide in 1.4 M Perchloric acid solution from 200 nm to 600 nm against the 1.4 M Perchloric acid as a blank. Wavelength shall be check for the peak …

2023年11月7日 · Procedure. Take a pair of cuvettes having length of 1cm and perform the baseline correction using 1.4M Perchloric solution from 200 nm to 600 nm; Remove the cell …

Holmium oxide liquid wavelength standard is traceable to NIST SRM 2034 and consists of holmium oxide (4%) in perchloric acid (10%) sealed in a quartz cell. Specifically, the solution …

2022年9月19日 · The dissolution of holmium oxide was carried out by moderate heating on the calibrated hot plate and kept at room temperature for overnight before measurements. Both …

2018年10月24日 · The holmium oxide and metallic Y samples are put in a small tantalum cylindric crucible suspended by using tantalum wires inside the hot zone that could reach temperatures …

The use of holmium oxide solvated in perchloric acid is an established and well recognised method for the validation of the wavelength scale of a spectrophotometer in the UV and visible …