New family of P.A.R.
ELECTROMETERS
Model 134 - extended voltage, cur rent, charge a n d resistance ranges, $615
Report for Analytical Chemists (9) W. J. Price in "Spectroscopy," D . R. Browning, Ed., McGraw-Hill, New York, Ν . Υ., 1969. (10) D . W. Ellis and D . R. Demers, Advan. Chem. Ser. 73, 326 (1968). (11) R. Smith in "Spectrochomical Meth ods of Analysis," J. D . Winefordner, Ed., John Wiley, New York. Ν . Υ., in press. (12) J. D . Winefordner and R. Smith in "Analytical Flame Spectrometry, Se lected Topics," R. Mavrodincanu, Ed., Centrex, Eindhoven, The Netherlands, in press. (13) H . P . Hooymayers, Spectrochim. Ada 23B, 567 (1968). (14) C. Th. J. Alkemude in "Proceedings of Atomic Absorption Conference," Sheffield. England, July 1969, Butterworths, London, England, in press. (15) P . J. T. Zeegers and J. D. Wine fordner, Spectrochim. Acta, in press. (16) J. D . Winefordner, M . L. Parsons. J. M. Mansfield, and W. J. McCarthy, ANAL. C H E M . 39, 436 (1967).
(17) M. L. Parsons, W. J. McCarthy, and J. D . Winefordner, J. Chem. Ed. 44, 214 (1967). (18) J. I. Dinnin, ANAL. C H E M . 39, 1491
Model 135 - internal battery p o w e r supply and off-ground operation, $675
(1967). (19) D . L. Manning and P . Heneage, At. Absorption Newslett. 7, 80 (1968). (20) N . Omenetto and G. Rossi, Anal. Chim. Ada 40, 195 (1968). (21) G. Rossi and N . Omenetto, Talanta 16,263 (1969). (22) D . G. Mitchell and A. Johansson, Spectrochim. Acta 25B, 175 (1970). (23) D .
N.
Armentrout,
ANAL.
CHEM.
38, 1237 (1966). (24) D . L. Manning and P . Heneage, At. Absorption Newslett. 6, 124 (1967). (25) J. P . Matousck and V. Sychra, ANAL. C H E M . 41, 518 (1969).
Model 1 3 6 - d i g i t a l display a n d BCD output, $995 • Zero stability < 5 0 0 /iV/24 h r s ; < 7 5 ,uV/°C; ΙΟ"15 Λ/24 h r s • Current offset < 3 χ 1 0 1 5 A • Sensitivities to 1 mV FS • Overload up to 600 V on all ranges • 30 /iV pk-pk voltage noise • Guarded input circuits • Full line of accessories PRINCETON APPLIED P RESEARCH CORPORATION A 565,Princeton, New Jersey 08540 Box R
Gentlemen: Π Please send electrometer brochure. Π Please have a P.A.R. applications engineer contact me. Name Title Organization _ _ Address City State
Zip
Phone Circle No. 159 on Readers' Service Card
vo
(26) J. W. Robinson and C. J. Hsu, Anal. Chim. Acta 43, 109 (1968). (27) T. S. West and X . K . Williams, ANAL. C H E M . 40, 335 (1968).
(28) T. S. West and X. K. Williams, Anal. Chim. Acta 42, 29 (1968). (29) V. Svchra and J. P . Matousek, Ta lanta 17", 363 (1970). (30) T. S. West and X . K . Williams, Anal. Chim. Acta 45, 27 (1969). (31) R. G. Anderson, I. S. Maines, and T. S. West, Anal. Chim. Acta 51, 355 (1970). (32) H . Massmann, Spectrochim. Acta 23B, 215 (1968). (33) J. P . Matousek and V. Sychra, Anal. Chim. Ada 49, 175 (1970). (34) V. Sychra, P . J. Slevin, J. P . Matou sek, and F . Bek, Anal. Chim. Acta 52, 259 (1970). (35) V. Svchra and J. P . Matousek, Anal. Chim. Ada 52, 376 (1970). (36) J. B . Headridge and J. Richardson, Lab. Pract. 19, 372 (1970). (37) R. Smith, R. C. Elser, and J. D . Winefordner, Anal. Chim. Acta 48, 35 (1969). (38) M . D. Amos, P . A. Bennett, K . G. Brodie, P. W. Y. Lung, and J. P . Matousek, presented at 21st Pittsburgh Conference in Analytical Chemistry and Applied Spectroscopy, Cleveland, Ohio, March 1970. (39) M . P . Bratzel, R. M. Dagnall, and J. D . Winefordner,
713 (1969).
40 A · ANALYTICAL CHEMISTRY, VOL. 43, NO. 4, APRIL 1971
ANAL. C H E M . 41,
(40) M . P . Bratzel, R. M . Dagnall, and J. D . Winefordner,
ANAL. C H E M . 41,
1527 (1969). (41) M . P . Bratzel and J. D . Wineford ner, Anal. Chim. Acta 39, 394 (1967). (42) R. F . Browner, R. M . Dagnall, and T. S. West, Anal. Chim. Acta 46, 207 (1969). (43) R. F . Browner, R. M . Dagnall, and T. S. West, Talanta 16, 75 (1969). (44) R. M . Dagnall, G. F . Kirkbright, T . S. West, and R. Wood, Anal. Chim. Ada 47, 407 (1969). (45) R. M . Dagnall, M . R. G. Taylor, and T. S. West, Spedrosc. Lett. 1, 397 (1968). (46) R. M . Dagnall, K . C Thompson, and T. S. WTest, Anal. Chim. Acta 41, 551 (1968). (47) R. M . Dagnall, K . C Thompson, and T. S. West, Talanta 14, 557 (1967). (48) R. M . Dagnall, K. C. Thompson, and T. S. West, Talanta 14, 1151 (1967). (49) R. M . Dagnall, K . C. Thompson, and T. S. West, Talanta 14, 1467 (1967). (50) R. M . Dagnall, K. C. Thompson, and T. S. West, Talanta 15, 677 (1968). (51) R. M . Dagnall and T. S. West, Appl. Opt. 7, 1287 (1968). (52) B. Fleet, K. V. Liberty, and T. S. West, Anal. Chim. Ada 45, 205 (1969). (53) G. F . Goodfellow, Anal. Chim. Acta 36, 132 (1966). (54) D . N . Hingle, G. F . Kirkbright, and T. S. West, Analyst 93, 522 (1968). (55) J. M . Mansfield, M . P . Bratzel, H . O. Norgordon, D . N . Knapp, K. E . Zacha, and J. D . Winefordner, Spectro chim. Acta 23B, 389 (1968). (56) R. Smith, C. M . Stafford, and J. D . Winefordner, Can. Spedrosc. 14, 2 (1969). (57) K. E . Zacha, M. P . Bratzel, J . D . Winefordner, and J. M . Mansfield, ANAL. C H E M . 40, 1733 (1968).
(58) R. F . Browner, R. M . Dagnall, and T. S. WTest, Anal. Chim. Ada 50, 375 (1970). (59) A. Hell and S. Ricchio, presented at 21st Pittsburgh Conference on Analyti cal Chemistry and Applied Spectros copy, Cleveland, Ohio, March 1970. (60) M . S. Cresser and T. S. West, Anal. Chim. Acta 51, 530 (1970). (61) A. Fulton, K. C. Thompson, and T. S. West, Anal. Chim. Acta 51, 373 (1970). (62) J. F . Alder and T . S. West, Anal. Chim. Ada 51, 365 (1970). (63) M . P . Bratzel, R. M . Dagnall, and J. D . Winefordner, Anal. Chim. Acta 48, 197 (1969). (64) M . P . Bratzel, R. M . Dagnall, and J. D . Winefordner, Appl. Spedrosc. 24, 518 (1970). (65) G. B . Marshall and T. S. West, Anal. Chim. Acta 51, 179 (1970). (66) R. M . Dagnall, G. F . Kirkbright, T . S. West, and R. Wood, Analyst 95, 425 (1970). (67) P . C. Wildy and K. C. Thompson, Analyst 95, 562 (1970). (68) M . P . Bratzel and J. D . Wineford ner, Anal. Lett. 1, 43 (1967). (69) R. M . Dagnall, G. F . Kirkbright, T. S. West, and R. Wood, ANAL. C H E M .
42, 1029 (1970). (70) K. C. Thompson and P . C. Wildy, Analyst 95, 776 (1970).
