Standard No.:	GB/T 30902-2014
English Name:	Inorganic chemicals for industrial use—Determination of impurity element—Inductively coupled plasma optical emission spectrometry(ICP-OES)
Chinese Name:	无机化工产品 杂质元素的测定 电感耦合等离子体发射光谱法(ICP-OES)
Chinese Classification:	G10    Inorganic chemicals in general
Professional Classification:	GB    National Standard
ICS Classification:	71.060.01 71.060.01    Inorganic chemicals in general 71.060.01
Issued by:	AQSIQ; SAC
Issued on:	2014-07-08
Implemented on:	2014-12-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	220.0
Delivery:	via email in 1 business day

Inorganic chemicals for industrial use— Determination of impurity element— Inductively coupled plasma optical emission spectrometry (ICP-OES) Warning! Some reagents used in this test method are toxic or corrosive, so be careful when operating! If it is splashed on the skin, it shall be washed with water immediately, and serious cases shall be treated immediately; the high-pressure argon cylinders are used in this test method, which should be operated according to the safety operation regulations of high-pressure cylinders; after igniting the plasma, the torch chamber door should not be opened to prevent high-frequency radiation from harming the body; pay attention to safe use of electricity. 1 Scope This standard specifies the principle, reagents, apparatus, equipment, analytical procedures, precision and recovery rate of determining metallic and nonmetallic impurity elements in inorganic chemicals for industrial use by inductively coupled plasma optical emission spectrometry (ICP-OES). This standard is applicable to direct injection of liquid test samples containing various impurities in inorganic chemicals or test solutions after removal of matrix, and determination by inductively coupled plasma emission spectrometer. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 4470 Analytical spectroscopic methods—Flame emission, atomic absorption and atomic fluorescence—Vocabulary GB/T 4842 Argon GB/T 6379.2 Accuracy (trueness and precision) of measurement methods and results—Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods HG/T 3696.2 Inorganic chemicals for industrial use—Preparations of standard and reagent solutions for chemical analysis—Part 2: Preparations of standard solutions for impurity 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 4470 and the following apply. 3.1 plasma ionized gas with an ionization degree greater than 0.1% and equal quantity of positive and negative charges 3.2 high frequency generator high-frequency power source which provides high-frequency energy for the coupling coil and the plasma 3.3 plasma torch device for maintaining stable discharge of ICP, which is usually composed of three-layer concentric quartz tubes, in which coolant gas is fed into the outer tube, auxiliary gas is fed into the middle tube, and carrier gas is fed into the inner tube

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents 6 Apparatus 7 Analytical procedures 8 Precision 9 Recovery rate Annex A (Informative) Preparation of multi-element standard solution Annex B (Informative) Wavelength of analytical spectral lines of to-be-measured elements Annex C (Normative) Determination method for detection limit