Descripción: Description and Identification of Soils (Visual-Manual Procedure
Standard Test Method for Manganese in Gasoline By Atomic Absorption Spectroscopy Metode Uji Standar untuk Mangaan dalam gasoline dengan AAS 1 This standard is issued under the the ed designation designation !"#"1$ the number immediately immediately follo%ing the designation indicates the year of original adoption or& in the case of re'ision& the year of last re'ision( A number in parentheses indicates the year of last reappro'al( A superscript epsilon )*+ indicates an editorial change since the last re'ision or reappro'al( 1( Scope,- .uang /ingkup 1(1 Metode uji ini melingkupi penetapan kadar total mangaan sebagai metilsiklopentadienil mangaan trikarbonil )MMT+ dalam gasoline dalam rentang konsentasi 0&2 sampai 30 mg-/ mangaan( This test method co'ers the determination of the total manganese content& present as methylcyclopentadienyl methylcyclopentadienyl manga4nese tricarbonyl )MMT+& of gasoline %ithin the concentration range from 0(2 to 30 mg-/ of manganese( 1( Metode uji ini dapat diaplikasikan diaplikasikan untuk membentuk kembali gasoline dengan 'olume metil tersier butyl eter lebih dari 1 5 atau 'olume etanol sampai 105( Metode ujiini tidak dapat diaplikasikan kepada suatu 6at yang mudah merekah yang mengandung 6at yang lebih dari 1# 'olume( 5 olens dapat ditentukan dengan metode uji !1"17 )nondepentanisasi+( This test method is applicable to reformulated gasoline containing up to 1 5 'olume methyl tertiary butylether or up to 10 5 'olume ethanol( This test method may not be appli4cable to highly cracked materials containing greater than 1# 'olume 5 olens as determined by Test Method !1"17
)nondepentani6ed+( 1(" Metode Uji ini sudah dikembangan dan diuji secara spesik untuk penetapan MMT dalam gasoline sesuai dengan rentang konsentrasi yang direkomendasian( Aplikasi lainnya adalah penetapan MMT dalam suatu 6at& atau penetapan senya%aan mangaan yang lain dalam gasoline& tetapi belum pernah diujikan( This test method has been de'eloped and tested speci4cally for the determination of MMT in gasoline o'er the recommended concentration range( Application of the method to other concentration ranges& to the determination of MMT in other materials& or to the determination of other manganese compounds in gasoline ha'e not been tested 1(3 8ilai yang ditetapkan dalam Satuan 9nternasional dapat dikatakan Standar( :onsentrasi dalam satuan mg-/ mangaan(The 'alues stated in S9 units are to be regarded as the standard( The preferred concentration units are mg-/ manga4nese( 1(2 Standar ini This standard does not purport to address all of the safety concerns& if any& associated %ith its use( 9t is the responsibility of the user of this standard to establish appro4priate safety and health practices and determine the applica4bility of regulatory limitations prior to use( ;or specic %arning statements& see Sections2and<( "( Summary of Test Method "(1 Sampel gasoline direaksikan dengan larutan brom dan dilarutkan dengan metil isobutil keton( :adar mangaan dalam sampel dapat ditentukan dengan A AS menggunakan udara4asetilen pada panjang gelombang =7&2 nm( The gasoline sample is treated %ith bromine solution and diluted %ith methyl isobutyl ketone( The manganese content of the sample is determined by atomic absorption spectrometry using an air4acetylene >ame at =7(2 nm and standards prepared from an organo4manganese standard mate4rial( 3( Signicance and Use
3(1 Suatu senya%aan organo4mangaan berfungsi sebagai 6at anti4ketuk ketika ditambahkan ke bahan bakar( Metode uji ini menyajikan rerata konsentrasi suatu 6at dalam sampel bahan bakar( ?ertain organo4manganese compounds act as antiknock agents %hen added to gasoline( This test method pro'ides a means for determining the concentration of such a material in a gasoline sample( 2( Apparatus 2(1 AAS& dilengkapi dengan lampu katode mangaan& untuk mengontrol absorbansi mangaan pada 7=&2 nm& burner tipe slot dengan kepala burner yang dapat diputar dan nebuli6er yang dapat diatur( )A%as Bahaya& beracun dan mudah meledak+ & Atomic Absorption Spectrometer& capable of scale e4pansion and e@uipped %ith a manganese hollo%4cathode lamp for monitoring manganese absorption at =7(2 nm& a premi slot4type burner %ith rotatable burner head& and an adjustable nebuli6er( )arningCa6ardous( Dotentially toic and eplo4si'e( .efer to the manufacturerEs instrument manual for asso4ciated safety ha6ards(+ 2( Fials& dengan ukuran 30 m/ atau lebih dengan tutup polietilena atau T;4 ;luorokarbon berlapis( Fials& up to 304m/ si6e %ith polyethylene or T;4 >uorocarbon4lined caps or glass stoppers( 2(" Dipet& deli'er& ukuran 1 m/Dipet& !eli'ery& 14m/ si6e( 2(3 Mikropipet& Tipe ppendorf atau yang setara Micropipet& 1004H/ si6e& ppendorf type or e@ui'alent( 2(2Automatic Dipet& or e@ui'alent deli'ery pipet& capable of deli'ering 7(04m/ @uantities <(1:emurnian .eagen( Beberapa reagen sesuai kelasnya sebaiknya digunakan pada setiap uji( Semua reagen merujuk pada Analytical .eagents of the American ?hemical Society& dimana spesikasinya sudah tersedia dengan jelas( .eagen kelas lain juga mungkin digunakan& akan tetapi kemurnian dari reagen tersebut harus jelas& sehingga tidak mengurangi akurasi dari percobaan( Durity of .eagents .eagent grade chemicals shall be used in all tests( Unless other%ise indicated& it is intended that all reagents shall conform to the specications of the ?ommit4tee on Analytical .eagents of the American ?hemical Society&
%here such specications are a'ailable( Ither grades may be used& pro'ided it is rst ascertained that the reagent is of suJciently high purity to permit its use %ithout lessening the accuracy of the determination( <( /arutan Brom& tambahkan larutan brom dengan 'olume sama dengan 'olume sikloheksana () A%as4 Bromin dapat menyebabkan luka bakar jika kontak dengan kulit( Gunakan sarung tangan& simpan larutan dalam 'entilasi yang baik ( +Bromine SolutionAdd reagent grade bromine to an e@ual 'olume of cycloheane( )arningBromine can cause se'ere and painful burns %hen it contacts the skin( 9n addition to other precautions& %ear protecti'e glo'es in preparing the solution and prepare& store& and use it in a %ell4'entilated hood(+ <(" /arutan Standar Mangaan 300 mgMn-/& larutakan senya%aan organo4mangaan standar ke dalam metil isobutil keton untuk mendapatkan konsentrasi 300 mgMn-/ Manganese Standard Solution 300 mg Mn- /!issol'e the appropriate amount of organometallic manganese standard in methyl isobutyl ketone to gi'e a standard solution of 300 mg Mn-/( <(3 !eret /arutan Standar Mangaan 3&0 10&0 0&0 30&0 ( ncerkan /arutan Mangaan Standar dalam metil isobutil keton sesuai perhitungan & agar mendapatkan konsentrasi yang diinginkan( Manganese& Standard Solution 3(0& 10(0& 0(0& and 30(0 mg Mn-/!ilute the 300 mg-/ standard manganese solution %ith methyl isobutyl ketone using 'olumetric glass%are to gi'e the desired lo%er concentration manganese standard solutions( <(2 Standar organometallic mangaan Irganometallic Manganese StandardDre4 prepared commercially a'ailable organometallic stock solutions ha'e
been found to be satisfactory( <(< Metil isobutil keton )A%as K Mudah terbakar& uap berbahaya+ )A%as K larutan MMT dalam bahan bakar bersifat tidak stabil ketika terkena sinar matahari( Casil yang rendah dan tidak menetu akan didapatkan apabila sampel bahan bakar terkena sinar matahari terlebih dahulu sebelum distabilkan( Methyl 9sobutyl :etone& reagent grade( )arning ;lammable( Fapor harmful(+ )arningSolutions of MMT in gasoline are chemically unstable %hen eposed to light( /o% and erratic results may be obtained if the gasoline sample is eposed to light prior to stabili6ation during analysis(+ <(=Luality ?ontrol )L?+ Sample)s+& preferably are a por4tion of one or more gasoline materials that are stable and representati'e of the samples of interest