土壤总磷方法验证报告.pdfVIP

土壤总磷方法验证报告

XXX-MolybdenumAntimonyAnti-photometricMethod

(HJ632-2011)MethodnReport

1.nstandards

XXX(HJ632-2011).

2.Methodprinciple

Afterbeingmeltedbysodiumhydroxide。allphosphorus-

XXXXXX。andabsorbanceXXX700nm。Withinacertainn

range。thetotalphosphoruscontentinthesampleconformstothe

Lambert-Beerlaw.

3.Facilitiesandenvironmentalns

Participatingdepartments:ChemicalAnalysisRoom

(participatinginallmanualexperiments。noothern)。

ColorimetricRoom(participatinginallcolorimetricexperiments。

noothern)。Goodwater。electricity。XXX(18-28℃).

4.XXXandtechnicalcapabilities

Name。nortitle。nal/yearsofworkinginthisfield。XXX。

anddepartment.

5.SamplingandanalysisXXX

Instrumentname:UV-XXX.

6.Reagentsandmaterials

Maindrugreagents:sulfuricacid。nitricacid。aceticacid。

potassiumdihydrogenphosphate。sodiumbicarbonate。

potassiumantimonytartrate。ammoniummolybdate。indicator。

etc.

7.XXX

RelatedpartsofXXX-molybdenumantimonyanti-

photometricmethod(HJ632-2011).

8.InstrumentsandXXX

Model。XXX。ncycle。andmeasurementrange.

9.Analysissteps

XXX-molybdenumantimonyanti-photometricmethod

(HJ632-2011).

10.Resultn

XXX-molybdenumantimonyanti-photometricmethod

(HJ632-2011).

11.Standardcurve

Table1:LinearnXXXphosphorusmass。absorbance。and

standardXXX(μg)。absorbanceA。A-A。linearnn。andn

coefficient(r).

12.nlimit

Byrepeatingtheblanktest7timesaccordingtoallsamplen

steps。XXXorcontentinthesample。calculatingthestandardn

ofthe7parallelns。XXXlimitaccordingtoformula(12.1).

MDL=t(n-1,0.99)×S(12.1)

WhereMDListhemethodnlimit。nisthenumberof

parallelsamplens。tisthe0.99quantileofthetnwithn-1

degreesof