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Method for measuring contents of strontium and aluminum in strontium chloride injection by graphite furnace atomic absorption spectrometry

A technology of graphite furnace atomic and absorption spectroscopy, which is applied in the field of measuring aluminum content and strontium in strontium chloride injection, can solve the problems of large initial investment, high instrument price, and inability to perform valence analysis, and achieve low investment and operating costs , the effect of simple operation

Inactive Publication Date: 2013-02-06
SHANGHAI ATOM KEXING PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] 4. Operating costs
[0026] 1. For solid samples, it generally needs to be converted into a solution in advance, and this process often deteriorates the detection limit
[0027] 2. A large amount of Ar gas is consumed during work, so the operating cost is high
[0028] 3. The current instrument price is still relatively high, so the initial investment is relatively large
[0029] 4. If the ICP emission spectrometry is not used in conjunction with other techniques, it only measures the total amount of elements in the sample and cannot perform valence analysis

Method used

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  • Method for measuring contents of strontium and aluminum in strontium chloride injection by graphite furnace atomic absorption spectrometry
  • Method for measuring contents of strontium and aluminum in strontium chloride injection by graphite furnace atomic absorption spectrometry

Examples

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Embodiment 1

[0065] Utilize graphite furnace atomic absorption spectrometry to measure the content of strontium in the strontium chloride injection, specifically comprise the following steps:

[0066] (1) Precisely draw 0.1ml of strontium standard solution with a concentration of 1.0g / L in a 10ml volumetric flask, dilute to the mark with 1% hydrochloric acid, shake well, and obtain a stock solution;

[0067] (2) Draw 0ml, 0.5ml, 1.0ml, 1.5ml, 2.0ml stock solutions into 10ml volumetric flasks respectively, and dilute to the mark with 1% hydrochloric acid to obtain concentrations of 0μg / l, 5μg / l, 10μg / l, 15μg / l, 20μg / l strontium standard solution;

[0068] (3) Accurately absorb strontium chloride, dilute it 106 times in two steps with 1% hydrochloric acid, shake well, and obtain the test product;

[0069] (4) Turn on the atomic absorption spectrophotometer to preheat the strontium lamp for more than 30 minutes;

[0070] (5) After the atomic absorption spectrophotometer is stable, measure t...

Embodiment 2

[0101] Utilize graphite furnace atomic absorption spectrometry to measure the content of aluminum in the strontium chloride injection, specifically comprise the following steps:

[0102] (1) Precisely draw 0.1ml of aluminum standard solution with a concentration of 1.0g / L in a 10ml volumetric flask, dilute to the mark with ultrapure water, shake well, and obtain the stock solution;

[0103] (2) Pipette 0ml, 0.5ml, 1.0ml, 1.5ml, 2.0ml stock solutions into 10ml volumetric flasks respectively, and dilute to the mark with ultrapure water to obtain concentrations of 0μg / l, 5μg / l, 10μg / l, 15μg / l, 20g / l aluminum standard solution;

[0104] (3) Precisely absorb strontium chloride, dilute it 50 times with ultrapure water, shake it up, and obtain the test product;

[0105] (4) Turn on the atomic absorption spectrophotometer to preheat the aluminum lamp for more than 30 minutes;

[0106] (5) After the atomic absorption spectrophotometer is stable, measure the absorbance of the standard...

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Abstract

The invention relates to a method for measuring the contents of strontium and aluminum in a strontium chloride injection by graphite furnace atomic absorption spectrometry. The method comprises the following steps of: precisely absorbing a standard solution and diluting; preparing the diluted solution to the standard solution; measuring the standard solution by using the atomic absorption spectrometry to obtain a standard curve; measuring the strontium chloride injection by using the atomic absorption spectrometry; and comparing the standard curve to obtain the contents of the strontium and the aluminum in the strontium chloride injection. Compared with the prior art, the method disclosed by the invention has the characteristics that the input and operation cost is low and expenses consumed by an ICP-MS (Inductively Coupled Plasma-Mass Spectrometry) are 4 times of the expenses GFAAS (Graphite Furnace Atomic Absorption Spectrometry); and the method has the advantages of simplicity in operation, low detection limit and the like, and is mature in the analysis method.

Description

technical field [0001] The invention relates to a method for measuring strontium and aluminum content in strontium chloride injection, in particular to a method for measuring strontium and aluminum content in strontium chloride injection by using graphite furnace atomic absorption spectrometry. Background technique [0002] When it comes to the application prospect of atomic absorption spectrometer, we have to talk about ICP analysis technology. Not only because ICP technology (especially since the emergence of ICP-MS) is a hot topic, but also in the daily analysis and testing of our institute, ICP technology and AAS technology often determine some of the same elements, such as AAS method can be used Ag, Cu, Pb, Zn, Co, Ni, etc. can also be determined by ICP method. Let’s analyze the differences and advantages of atomic absorption instruments and ICP analysis instruments from four aspects. [0003] 1. Detection limit [0004] FAAS has a detection limit of 10 -6 Level, th...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N1/38
Inventor 金舒昕
Owner SHANGHAI ATOM KEXING PHARMA
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