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72W2 Federal Register / Vol. 45. No. 21Z / Thursday, October 30, 1980 / Proposed. Rules
<br /> trivalent chromium to hexavalent Agency,26 W St.Clair Street,Cincinnati, 8.1.3 Pasteur pipets,harosilicata glass.era t
<br /> Chromium. will this oxidized hexavalent Ohio 4528E ISW-M6.19t10j. Cm
<br /> chromium be emitted to the air as a (2]For chromium{VII:Method 8.545 In 8.2 Centrifuge:any centrifuge capable of
<br /> result of incineration or will it remain in
<br /> "Test Methods for the Evaluation of Solid reaching 2t70t1 rpm and accepting the
<br /> the Ititiof i rcinr ash?How effective are Waste.Physical/Chemical Methods:'Solid cwttriFFuge tubas described In 6.1.2.may be
<br /> available stack scrubbing Hdevices in Waste information,U.S.Environmental used.
<br /> Protection Agency,28 W.St-Clair Street. 6.3 pit Meter.a wide variety of
<br /> removing any chromium from the off- Cincinnati, Ohio 45268. instruments are commerically available and
<br /> gases? suitable for this work.
<br /> 2.If chromium-bearing wastes are to Appendix A-Method or Analysis for 8.4 Test Tube Mixer:any mixer rapald,:
<br /> Hexavalent Chromium or thorough vortex is acceptable.
<br /> be regulated as hazardous when g �
<br /> incinerated or when subjected to similar A:ferhod8.546liexrrvalent Chromium by T Reagents
<br /> destructive oxidation processes,what Cvpreeipi(alion Wish Lead Sulfate 7.1 Lead Nitrate Solution:Dissolve 31,1
<br /> grams of lead nitrate.PbJNO,],(analytical
<br /> concentration of chromium should be 1.Scope and Application reagent grade)•in deionixed dishiled water
<br /> present in the waste to trigger regulatory 1.1 This method covers the determination and dilute to 100 mi.
<br /> ronLrois?What is the correlation of dissolved hexavalent chromium Cr[VI]in 7.2 Ammonium Sulfate Solution:Dissolv,.
<br /> between concentrations of total Extraction Procedure EP)extracts. 27 grams of ammonium sulcate.(IVH.),SO,
<br /> chromium in a waste,and 1.2 The method may be used to analyze (analytical reagent grade]in deionixed
<br /> concentrations of hexavalent chromium samples containing more than 5 pg of Cr(VI) distilled water and dilute to 110 ml.
<br /> in incinerator emissions?Do conditions per liter.In many cases,dilution or the 7,3, Calcium Nitrate Solution:Dissolve
<br /> of incineration or pyrolysis affect this extract will be necessary to achieve an 11.8 grams of calcium nitrate.Ca(NO,641 i3O
<br /> optimal concentration range for Furnace [analytical reagent grade]in doionized
<br /> ratio? Atomic Absorption specisvmetry.The distilled water and dilute to 100 ml.1 mi 20
<br /> 3. What management standards dilution or the sample extract is desirable rag Ca. 1
<br /> should he applied to facilities since it will reduce the likelihood of 7.4 Nitric Arid,Concentrated,distilled
<br /> inciavraling chroinimum-bearing wastes interferences from sulfate and chloride ions reagent grade or spectrogrude quality.
<br /> during the interim status period?Are (see 4,1)which are present in many extracts 7.5 Acetic Acid,Glacial:ACS reagent
<br /> subparts A,R.C.D.1w G,H, and D of the and to increase the reproducibility of the grade 7.5.1 Acetic Acid,109(v/v):Dilute ID
<br /> Part Z65 interim Status standards method. ml glacial acetic acid to 100 ml with
<br /> appropriate? 2.Summary of(lie Method deionixed distilled water.
<br /> 2.1 The method is based on the separation 7.6 Ammo?Jum Hydroxide.10%(vJvf,
<br /> Ditie&Ortaber 27,19M. of Cr(Vi)from solution by coprecipitalion of Dilute 10 ml concentrated ammonium
<br /> Douglas M.Costae, lead chromate with lead sulfate in a solution hydroxide.NH.OH(analytical reagent grade;.
<br /> Administrm(spr. of acetic acid.After separation the super'nato to 1W ml with deionixed distilled water.
<br /> It is proposed to amend Title 40 CFR (containing Cr(llfl)is drawn off,the 7.7 Ffydrogen Peroxide•"*:ACS reagem
<br /> ('art 261 as tallows: precipitate is resolubilized in nitric acid as grade.
<br /> irivulent chromium Cr(III)and quanttfied by 7.8 Putussium Dichromitle Standard
<br /> §261.24 1Arnendedl Furnace atomic absorption spectrometry. Solution:Dissolve 2.8285 grams of dried
<br /> 1. In 261.24,Charncterislie of£P 3.Sample llnndhng and Preservation potassium dichromate,KrCr,O,(analytical
<br /> 3.1 For guidance on sample handling and reagent grade),In deinnized distilled water
<br /> Toxicity, amend by revising the.entry glassware cleaning procedures ape Section and dilute to 1 liter.1 m1=1 mg Cr(1000 mg/
<br /> for RPA Hazardous Waste Dumber D007 8,49. 1),
<br /> Table 1 an follows: 3.2 The sample to be evaluated for the 7.9 Trivaient Chromium Working Stork
<br /> Extraction Procedure charucteristic should Solution:To 50 rni of the potassium
<br /> not be acidIred,but instead transported and dichromate standard solution[7.81 add t ml
<br /> malamum stored at 4'C until•analysis, of 30%H.O.(7.7)and 1 ml concentrated
<br /> EPA PMLUWd0qa C°tam 3.3 Since stability of Cr(Vl)is not HNO,(7.4)and dilute to 100 ml with
<br /> w�slu m,.rdrer (mill,grams completely understood at this time.the deionixed distilled water.1 ml=0.5 mg Cr[iit}.
<br /> per liter) analysis should be carried out as soon ss Prepare frrsh monthly or as needed.
<br /> possible. a.Calibration
<br /> Dow . ............... Cl.oenpm(VO------_-------- 5.0 4.Interferences 8.1 At the time of anlaysis,prepare a
<br /> 4.1 Samples containing either sulfate or blank ane}a series of at toast four calibration
<br /> Chloride in concentrations above 1000 mg/ standards from the Cr[I1I}working stock(7.9)
<br /> liter should be diluted before proceeding to that wiil adequately bracket the sample and
<br /> 2.In Appendix 11 to Part Z61 EP step 9.1• cover a concentration range or 5 to 100 ug
<br /> I'nxicity'lesl Procedure.revise
<br /> S.instrument parameters(Furnance Atomic.. CrJ1.Add to the blank and each standard.
<br /> Absorption Specimmerry) before diluting to final volume,1 ml 30%H2O-
<br /> Analytical Procedures for analyzing 5.1 Dryin,a Time ant]Temperature:30 sec (7.7),5 nil concentrated HNO,(7,4)•and 1 ml
<br /> Eelmr.•t C0nJ!aMinants as fGHOWS: ' at 125°C, calcium nitrate solution(7.3)for ouch 100 all
<br /> Arrolytirol Pr wedurvs For Analysirw Exrrae1 5.2 Ashing Time and•Temperature:30 soc of prepared solution.These calibration
<br /> Con aminanls at 1000°C. standards should be prepared fresh weekly.
<br /> i[ta test methods for anal the extract 5.3 Atomizing Time and Temperature:10 or as needed.
<br /> y sec at 2700'C. 8.2 The listed instrument condition(5)
<br /> are as tallows: 5.4 Purge Gas Atmosphere:Argon and calibration concentration range are for a
<br /> 01 For arsenic,barium.cadmium,lead, 5,5 Wavelength-,357.9 am Perkin-Elmer HGA•2100 based on the use of a
<br /> mercury.selenium.silver,endrin.lindane. 5.8 Other operating parameters should be 20 ul injection,aintinuous flow purge gaa Find
<br /> methoxychlor.toxaphene.2,4-D[2,4- set as specified by the part]ca[at instrument non-pyrolytic graphite.The use of
<br /> di chIoro phenosxyacctic acid1.or 2.,4.5-TP[2, manufacturer. simultaneous background correction is
<br /> 4,5`tr•ichlorophenoxypropionic acidl:'Test B.Special Apparsius required For both o:aiibrntiun and sample
<br /> Methods Fero the Evaluation of Solid Waste. 6,1 Glassware :analysis.
<br /> Physiral/Chernical Methods."Solid Wate 8.1.1 Filtering flask,heavy wall.]liter 9.Procedure
<br /> Information,U-S.Environmental Protection capacity 9.1 Transfer u 50 ad portion of the filtered
<br /> ti.1.2 Centrifuge tubes,heavy duty, sample to a 100 in]Griffin beaker and adJust
<br /> `Nola See PR Doc.W-33871 poblished a (fit-,eluJ conical,graduated,glass stuppered,10 mf to a pit or 3.510.3 by adding dropwise
<br /> of this Pilrt IX of the Federal Register- capacity vol ume9 of 1(K acetIc acid.Not P:Care Tnu51
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