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lations <br /> 451)8 Federal Register f Vol, 59, No. 2J7 f Mogday, january S1, 1994 { Rules and Regu <br /> TABLE IB. -UST OF APPROVED INORGANIC TEST PROCEDURES-CQritinued <br /> NeferenCe (metlod number or page) -. <br /> Pararr ,rater, iiriits_ancl method _ ,�„Y'� y <br /> EaA1-,5 ':C - ASTM ( USGS2 Ocher <br /> mEd. - If <br /> #er ode :?51.3 4,5,) `i H3 P or <br /> Automated phenate ... ..................... <br /> . <br /> 5erni-autornated block digeslor colorimetric, 351-2 { ) <br /> Man.cai or biock dig..stor Potentiometrc 351.4 ..: <br /> 32. Lead---Total-,mg1L; Digestion•foI)cid by: <br /> AA drrect asoiraiion. ................ ... 233.7 3111 B or C X59-90(A�r S) l_a, 99-35 074.27.3 <br /> AA furnace ..._ ._...-•...........:........._.......:......... 2392 311313 C 5a? ?o(Q) <br /> 1CP/A.ES. ..........................ti_.....-•-.........._. . 5200.7 3120 B <br /> nr•o 3e .... D4190--F2(88) <br /> _. .......................••--•--••-•---•----.._.........._... ................_.. ......._.._.........._. ........................... Note 34. <br /> V otter,netry 11. or ..................................„..__... .. <br /> Colorin-I is (Dithizone) .......__......................... .................... 350O-Pb D <br /> 33. Magnesium-Total•, mg/L: Digestion, fob <br /> loured by: <br /> AA dire-1:t aspire ion .:...................................... 242.1 3111 3 D511-92(B) 1 :A7-Z5 97427? - <br /> 1CP{AES ..._......................_..._...................... _5200.7 31203 <br /> ......................-...................... .................... ___.__.............. ..__---------•---•---..__.._.. ._ Note 34. <br /> Gravimetric . <br /> ... . -•----._. . ... <br /> ..._.:,.---.._..---••-•--•--•----•---•.............. ..................:. 3500-fi+tg Q ._..... <br /> 34. Manganese•--Total4, mg1L; -Digestion-4 fol- <br /> )owed by: <br /> AA direct aspiration 38 .._......__•........................ 243.1 3111 B 0&58-90(A or B) 1-3454--�5 5744.27.0 <br /> AA furnace .................. 243.2 311213 0558-90(C) <br /> 6CPlAES. .................................................... 5293.7 31203 <br /> DCP3eor ._.................................................. ------- ........ ......................:... QY150 a2{S&} - -_---:-----...-_........ Note 34_ <br /> Colorimetric (Persuifate).or ........................... .................... 3500-Mn D ...................._.......... 920.203? <br /> (Periodate) .................................................. _....._ _. ..........._........... ..... ............... _.........._.._.._.. Note 23. - <br /> 35_ Mercury--Total A,rngfL• <br /> Cold vapor,manual or ...............•................... 245.1 3312 8 'D3223-91 I-3462••- 5. 977.22.3 <br /> AutomaIed <br /> .................................................... 245.2 <br /> 35. Motybdenum --Total4, mg/L; Digestion4 U- r <br /> lowest by: <br /> 246.1 3111 p 1----190--35 - <br /> - AA direct aspiration ....................................... .._._.._...._..------_•---••- <br /> IC furnace .._ ................................................... 2452 3113 B <br /> iCP/AE5 ...,�__.._..�.......................................... � 200.7 3124] B - ' <br /> s - <br /> --•--•--••----- ------ - •----•---•--•-_---------- . . <br /> DCP.._.._.._.�_..__.._...,..............._..--•.-_-- Note 34. <br /> 37- Nickel--Tota14,mg/ ;Digestion followed by _ <br /> AA direct aspiration _...................................... 249.1 3111 B or C 01 686­90(A or B) 1-3493-85 <br /> AA furnace . ..............::.................•-•----.....:.._ 2492 3113 S 1D7Ea6--90(C) <br /> IC?/Adze52DD.7 31203 <br /> DCP>E,or Rt190-82(88) -. -Note 34. <br /> .•....................... - _.. - ._._.. <br /> . Cabrirretric a tozime ............. .. ...... 3500-Ni R - - . ; :, . .. .:.-• <br /> 38.Nitrate(as N),'mg/L• <br /> Colorimetric (Brucine sulfate),-or, Nitrate-ni- 352.1 ........................... <br /> ......... :...._.._ ............ 973.50 3.419 <br /> trite N minus Nitrite N (See parameters 39 D 17,p.28.9 <br /> and 40). <br /> 39. Nftrate-nitrite (as N),mgfL: <br /> Cadmium reduction, Manual or ....... 353.3 4500--NO3 E DIU7• 90(B) <br /> Autornated,or ..................... <br /> .--- <br /> .--------------- 353.2 4500--NO3 F D3-57-90(A) 1-4545--85 <br /> Automated hydrazine ..................................... 353.1 4500-NO� H <br /> 417_NMte (as N), mg/L;Spectrophotornetric: <br /> Manual or ....................................................... .354.1 .-._-------- .. Note 25. <br /> Automated(Diazotization) .............................. .................... _......................... .....-.......................... 4500-No: <br /> 41.Oil and grease-Total recoveratale, mg1L: - <br /> Gravimetric (extraction) ........................... 413.1 5520 B - <br /> 42.Organic carbon---Total (TOC).mg/L <br /> Combustion or oxidation ................................ .771",5.1 5330 B,C, or D D279-35(A or B) .......... -973.473 p.14 z* <br /> 43. Organic nitrogen (as N), mglL: F <br /> Total lgeMahl N (Parameter 31) minus arn- <br /> rnarlia N (Pararneter 4). <br /> 44. Orthophcsptime (as P), mg./L Ascorb)c acid <br /> metizad: -• .- - <br /> Automated,or 355.1 4500-?F ... 1--4601-85 973.563 <br /> Manual single reagent ....:.:............................ 3352 4500--P E C515-38(A) 973.553 i <br /> . . , <br /> anuaf two re2gent _..__..........:...............•..... 385.3 - .. <br /> 45. 0sm)um-Total,4 r,-Kja; QigestiQn 4 foltowed <br /> by: <br /> AA direct aspiration, or 252.1 3111 D <br />