主题:【第六届原创】Verification of the Reporting Limit and Validation

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依风1986
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Verification of the Reporting Limit and Validation for Soluble Cadmium in small part metal sample


1.      Scope



The study is to examine the validation of reporting limit of heavy metal soluble element (Cadmium) in small part metal as sample in accordance with test method CPSC-CH-E1004-11(GC051.TP).





2.      Reagent and Apparatus



2.1  Inductively Coupled Argon Plasma Spectrometer.



2.2  Electronic balance 1 Div. = 0.001 g.



2.3  Metal Scissors, stainless steel



2.4  Shaking water bath, 37 ± 2°C



            2.7 Conc. Hydrochloric acid (A.R.).



            2.8 Deionized water..



            2.9 General laboratory apparatus.



3.  Experimental



            In this study of the reporting limit, one trial was performed on non spike metal sample (free of soluble Cd in metal material) and ten trials were performed on spiked metal sample  (free of soluble Cd metal material).



For small part metal materials by soluble extraction according to CPSC-CH-E1004-11(GC051.TP)



0.2g of the sample was weighed in 50 mL conical flask. Add 50 times the mass of sample ,10ml, of 0.07N hydrochloric acid in conical flask and spike with 0.5mg/l of Cd in sample at 37 ± 2°C and shake continuously for 24 hours.The shaking frequency of the shaker was set to 60 rpm. The bath was cover with lid to avoid light during shaking. After 24 hours, decant an aliquot of acid solution from the flask and save for analysis.The percentage recovery, the mean value and the relative standard deviation for studied sample were reported.



4.  Result



Validation record of reporting limit of soluble Cadmium in small part metal sample according to GC051.TP
4.1 Spike 0.5 mg/l of Cd into metal sample with 10 replicates and analyzed by ICP  

Item description

Soluble Cadnium Content (mg/l in solution)

    

Cd (final concentration in solution)

Recovery( %)

    

A1

0.4971

99.4

    

A2

0.5015

100.3

    

A3

0.5165

103.3

    

A4

0.4876

97.5

    

A5

0.5062

101.2

    

A6

0.4840

96.8

    

A7

0.5259

105.2

    

A8

0.5251

105.0

    

A9

0.4814

96.3

    

A10

0.4949

99.0

    

Mean

0.5020

100.4

    

Std. deviation

0.01620

--

    

RSD (%)

3.23

--

    








5.    Conclusion



            The recovery data of the spiked samples were summarsied in the table 1. The relative standard deviations of the spiked metal samples for reporting limit were found to be within 5%. It could be concluded that it is acceptable for the test process and result of reporting limit (0.5mg/l or 5ug of Cd) is satisfactory.









Prepared by :  ___________________                        Date : ___________________





Checked by :  ___________________                        Date : ___________________
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原文由 爆发吧,小宇宙(yw0108) 发表:
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shagei
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科比兄是哪家公司的啊,我发现你喜欢传SOP啊,是自己写的么
爆发吧,小宇宙
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原文由 依风1986(xurunjiao5339) 发表:
原文由 爆发吧,小宇宙(yw0108) 发表:
儿童饰品中镉含量的测试?什么意思?

玩具标准有,如CPSC-CH-E1004
你那后面还要签字啥的。
依风1986
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原文由 shagei(shagei) 发表:
科比兄是哪家公司的啊,我发现你喜欢传SOP啊,是自己写的么

有自己写的,也有借鉴别人自己修改的
依风1986
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原文由 爆发吧,小宇宙(yw0108) 发表:
原文由 依风1986(xurunjiao5339) 发表:
原文由 爆发吧,小宇宙(yw0108) 发表:
儿童饰品中镉含量的测试?什么意思?

玩具标准有,如CPSC-CH-E1004
你那后面还要签字啥的。

这是文件的固定格式,谁编写谁审批
爆发吧,小宇宙
结帖率:
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关注:0 |粉丝:0
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原文由 依风1986(xurunjiao5339) 发表:
原文由 爆发吧,小宇宙(yw0108) 发表:
原文由 依风1986(xurunjiao5339) 发表:
原文由 爆发吧,小宇宙(yw0108) 发表:
儿童饰品中镉含量的测试?什么意思?

玩具标准有,如CPSC-CH-E1004
你那后面还要签字啥的。

这是文件的固定格式,谁编写谁审批
hlyhaha
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