Saturday M o r n i n g B . L. CLARKE, Presiding chairman P H I L I P W. W E S T .
Interferences
with Reactions between agents and Metal Ions.
9:00.
Organic R e -
9:30.
FRITZ
FEIGL.
The
Role
of
Organic Reagents in t h e Chemistry of Specific, Selective, and Sensitive Reactions. 10:30. Discussion. 11:00. Recess. 11:15. W. W. BRANDT and G. ERICK S M I T H . Polysubstituted
FRED1,10-
Phenanthroline and Bipyridine Derivatives as Multiple Range R e d o x Indicators. Further Applications in Their Use as Specific Reagents for Anion Analysis. 11:45.
Shanklin Chemistry
Laboratory of Biology and Hall Laboratory of at Wesleyan University, Middle town, Conn.
Analytical Division Symposium To Investigate Organic Reagents ML EATURED speaker at the second annual Analytics.! Sympo-?iurn. .sponsored h v thp» Division of Analytical and Micro C h e m istry a n d Analytical Chemistry is t o b e Fritz Feigl, renowned analytical chemist at present associated with the Laboratorio da Produçao Mineral of the Ministerio d a Agricultura, R i o de Janeiro, Brazil. T h e general subject selected for the symposium is "Organic Reagents." Dates of the sessions, t o be held a t Wesleyan University, Middletown, Conn., will be June 24 and 25. William E . Kappauf, professor of psychology a t Princeton University, will give the principal address at the dinner m e e t ing on Friday evening, June 24. H i s topic will be "Applied Aspects of the P s y chology of Vision." Arthur B . L a m b , editor of t h e Journal of the American Chemical Society, is t o act as toastmaster. T h e program as announced b y S. E . Q. Ashley, of General Electric Co. and general chairman of t h e symposium, is a s follows :
Friday
2:00.
1:45.
Louis
A.
GORDON,
of Thorium tion. 2:15.
from
2:30.
VANSE-
Precipitation
Homogeneous
Solu
W . H. S M I T H and Ε . Ε . SAGER.
Preparation and Colorimetric Properties of Aluminon (aurin tricarboxylic acid.). 2:45.
N . H . F U R M A N , W . B. MASO»^,
and J. S. PEKOLA.
T h e Extraction
of
Cupf errâtes. 3:15. Recess. 3:30.
CHARLES
E.
WHITE.
Fluori-
metric Reagents f o r Aluminum, Beryllium, Boron, Thorium, and Zinc. 4:00.
I . M. KOLTHOFF.
Organic R e -
agents in Amperometric Titrations. 4:30.
CHARLES
Y.
BAXKS.
Water
Soluble 1,2-Dioximes a s Analytical R e agents. 7:00. Dinner M e e t i n g (advance reservation required). Mixer with refreshments f o r registrants at symposium.
R e s e r v a t i o n f o r S e c o n d S u m m e r S y m p o s i u m S p o n s o r e d by t h e D i v i s i o n o f A n a l y t i c a l a n d M i c r o C h e m i s t r y a n d Analytical
I
Chemistry
ι
W e s l e y a n U n i v e r s i t y , J u n e 24 a n d 2 5 , 1 9 4 9
I
N a m e (print):
ι
A d d r e s s (print):
I
Date o f arrival:
V i a railroad o r car?
Application for: A l l meals
Banquet alone
Single room
|
D o u b l e room
R o o m m a t e desired W i l l y o u share a d o u b l e r o o m if s i n g l e r o o m s are exhausted?
j m
I
Applications must b e sent to G e o r g e Matsuyama, Department o f Chemistry, | W e s l e y a n University, M i d d l e t o w n , C o n n . , before June 9, 1 9 4 9 . Please d o n o t send remittances.
1438
WINSLOW
The
and
H.
A.
Spectrophotometric
G. H . E L L I S , Ε . Μ . ZOOK, and
O. BAUDISCH. A Colorimetric M e t h o d for the Determination of Microgram Quantities of Boron.
Opening o f
C.
H.
Evaluation of Spot Tests.
symposium b y division chairmanIntroductory remarks hy pre siding chairman. LOW, and H . H. WILLARD.
E.
LIEBHAFSKY.
Afternoon
W A Y N E Λ. K I R K L I N .
E . PRICE, and
Saturday A f t e r n o o n M . G. BURFORD, Presiding chairman
12:30. Luncheon (.advance reservation required). S. E . Q. ASHLEY, Presiding chairman. 1:30.
T. R E I S S M A N N ,
M. L . WILLARD. Spot T e s t Chromatography as Analytical Tools in Organic Chemistry. 12:30. Luncheon (advance reservation required)
CHEMICAL
3:00.
C . E . BRICKER and Κ. Η . R O B
ERTS. Determination of E n d Unsaturation in Organic Compounds. 3:30.
A.
L.
UNDERWOOD
and
W.
F.
NEXJMAN. Determination of Beryllium with Alkannin and Naphthazarin. 4:00.
T . Y . TORIBARA and A. L . U N
DERWOOD. T h e Preparation of Alkannin and Naphthazarin. Registration Arrangements Registration will continue in t h e Hall Laboratory of Chemistry from Thurs day, June 23, 7:00 P.M. to 10:00 P . M . ; through Friday, 9:00 A . M . t o 6:00 P . M . ; and to Saturday from 8:00 A.M. t o 12:00 noon. T h e first session "will start at 1:30 P.M. on Friday. Registration fees will be $3.00 for in dividual members of t h e Society, desig nated representatives of corporation members (only o n e for each corporation membership), and visitors other than chemists or chemical engineers residing in t h e U n i t e d States; $6.00 for n o n m e m ber chemists or chemical engineers resid ing in t h e U n i t e d States, regardless of nationality. Associates of divisions or of local sections are n o t members of the A C S and, if they are chemists or chemi cal engineers, are subject t o t h e $6.00 fee. Full-time students of chemistry, b o t h graduate a n d undergraduate, are given t h e courtesy of registration on t h e s a m e basis a s members of the Society, in this case $3.00. Housing and Meals I t is necessary that reservations be senx in before t h e meeting. All requests must reach Middletown by June 9. Those wishing t o share a room with a specified individual should include a a separate application for each person, preferably i n t h e same letter. R o o m s will b e available in t h e uni-
AND
ENGINEERING
NEWS
Meals will be served through special catering. I t is therefore especially nec essary that reservations b e sent in before t h e meeting. T h e price for lunch on Friday, the banquet Friday evening, and breakfast and lunch on Saturday will b e $8.50. Arrangements can be made sepa rately for the banquet alone at a price, of $3.50.
Fritz Feigl, to speak at symposium; S. Ε. Q. Ashley, general chairman for the symposium ; M. G. Burford, Wesleyan University, chairman of local arrangements; and W. A. Kirklin, Hercules Powder Co,, chairman of analytical and micro division versily dormitories for Thursday, Friday, and Saturday nights, June 23, 24, and 25. Accommodations for married couples and single women can be provided, although these may be somewhat limited. There are only a few single rooms available and double occupancy is urged. Kates for individuals are $3.50 (including 50cent deposit for the k e y ) for the whole period of stay—either one, two, or three
nights. Married couples will be charged $5.50 (including 50-cent deposit for key). Bedding will be provided but the uni versity can not supply towels. Arrange ments can be made for some rooms in private homes adjacent to the campus at prices ranging from $3.00 to $5.00 per night. Special mention should be made on the application form if such accom modations are desired.
Dangers of insecticide Use Discussed A. S T A F F
J\. JOINT effort by government and in dustry to educate the public as to the advantages and dangers of new and potent insecticides, and in particular DDT, highlighted discussions at the spring meeting of the National Agricul tural Chemical Association held at the Westchester Country Club, Rye, Ν . Υ. on May 5 and 6. About 200 industrial representatives were present. Paul B . Dunbar, United States Food and Drug Commissioner, in deliver ing one of the principal addresses, stated that the widespread use of D D T since the war has exposed the public to small, continued intakes from many sources for long periods. H o w serious this hazard m a y b e in terms of human damage is not k n o w n . Rats fed with one part per million of D D T will, dur ing their normal lifetime, store D D T in fat. Minimal but characteristic liver damage was noted in feeding five parts per million. Female dogs exposed to cumulative effects secrete D D T in their milk. Mother rats fed 50 parts per mil lion or more of DT^)T produce smaller offsprings with fewer survivals than con trol animals. For toxicity studies, the F D A assumes that similar results might occur with human beings. Experiments conducted by the Bureau of Entomology and Plant Quarantine showed that milk from cattle which eat silage bearing D D T , or cattle sprayed with it or cattle kept in barns where D D T is used, contains D D T . In view of recent toxicological data on the cumulaV O L U M E
2 7,
NO.
20
»
»
»
REPORT
live effects of small doses of DDT, the F D A has had to revise its prior viewa that with proper precautions to protect the food from contamination, D D X was a safe insecticide to use in producing all types of foods. Since milk is a uni versal food and the principal food of babies and children, the F D A will not set up a tolerance for D D T in milk. Fortunately there are alternative and less objectionable substitutes for use in milk production. Dunbar emphasized that there is no need for hysteria about the milk sup ply and the impression that vast num bers of our population are consuming harmful quantities of D D T is unfounded. Dunbar reported that Dr. Arnold J. Lehman, chief of FDA's division of pharmacology, with his own and other scientific studies as a basis, believes that the danger point of D D T should b e un der one part per million if a large part of food consumed is contaminated but that five parts per million approaches that point if D D T is found in single items. Dr. Dunbar added that setting o f safe tolerances is a difficult question d u e to m a n y diverse factors. For example, no accurate methods were available for estimating residual spray left on o r ab sorbed by the food product ; information was lacking as t o whether residues re mained intact or whether weathering reduced or intensified the toxic effects and whether they could be removed by washing or are absorbed and thus not removable. Until such data is available, . M A Y
16,
19 4 9
Transportation Middletown m a y be reached by the N e w York, N e w Haven, and Hartford Railroad (Springfield line) t o Meriden, Conn. Bus service to Middletown con nects with all trains a t the Meriden station. Those coming from the west via N e w York Central may prefer to come down from Springfield, Mass., to Meriden. If there is sufficient indication ahead of time as to the numbers arriv ing by various trains, special arrange ments will be made for transportation from Meriden. Ask the bus driver t o let y o u off at D o w n e y House, which is on t h e Wesleyan campus in Middletown.
iieafiikgcj to establish tolerances are not possible. S. A. Rohwer, assistant chief of the Agriculture Department's Bureau of E n tomology and Plant Quarantine, principal speaker, stated that he felt that the public food supply is better protected in 1949 than in any other year notwith standing the recent preus discussions over possible toxic effects resulting from the use of D D T . H e based this statement o n research conducted i n his bureau. Dr. Rohwer stated that t h e Depart ment of Agriculture and the Food and Drug Administration cooperate in areas of mutual interest. With respect t o the problem of D D T , he stated, the Agricul ture Department accepts results of FDA's toxicity studies on plants, animals, and humans. This data, when coupled with results of Agriculture Department's research on how to prevent D D T or related halogenated hydrocarbons from getting into dairy products, resulted in t h e recent issuance of a statement con cerning suggested precautions in handling and using these insecticides. Misunder standing or incorrect conclusions b y cer tain informational media in discussing this ruling have led to a great deal of public concern. H e further pointed out that detailed results of recently conducted studies will show industry the need for such a warning without following the desirable practice of giving industry prior notice. Ernest Trigg, chairman of the board, National Paint, Varnish, and Lacquer Association, also emphasized the need for an educational program directed par ticularly to the farmers in t h e field of insecticides and pesticides. T h e farmer's motto in the use of these products should be "Don't be scared—be careful." 1439
