858 C. Chemical Oceanography OLR (1984) 3 ! (12)

to be related to their structure while humic acids appear to interact with Cu regardless of structure. Cd interacts only with mature, highly crosslinked humic acids. NOAA, AOML, 4301 Rickenbacker Causeway, Miami, Fla. 33149, USA.

84:6008 Wang, Shuchang, Youngchen Wang and Bingyi Sun,

1981. Stability constants of hydroxide complexes of Zn, Pb and Cd in KNO 3 solution. J. Shandong Coll. Oceanol., 11(4): 15-21. (In Chinese, English abstract.) Dept. of Mar. Chem., Shandong Coll. of Oceanol., People's Republic of China.

84:6009 Zhang, Zhengbin, Liansheng Liu and Chen-tung

Chen, 1984. Linear free energy relationships in marine chemistry. I. Seawater systems. Ocean- ologia Limnol. sin., 15(1):68-80. (In Chinese, English abstract.)

A new method for deriving linear free energy relationships is presented and used to confirm relationships between the stability constants of ion-pair/complex ions (e.g., Me-C1, Me-OH), metal-humic acids, trace metal-marine particles, and 'solution hydroxo stability' constants. Use of the method in estimating marine physico-chemical constants is discussed. Shandong Coll. of Oceanol., People's Republic of China. (mjj)

CLIO. Radioactivity, radioisotopes 84:6010

Jones, D.G., J.M. Miller and P.D. Roberts, 1984. The distribution of 137Cs in surface intertidal sediments from the Solway Firth [NE Irish Seal. Mar. Pollut. Bull., 15(5): 187-194. Geochem. and Petrology Div., Inst. of Geol. Sci. (NERC), Keyworth, Nottingham, NG125GG, UK.

84:6011 Mann, D.R. and S.A. Casso, 1984. ln-situ chemi-

sorption of radiocesium from seawater. Mar. Chem., 14(4):307-318.

Cs (stable and radioactive) is partially stripped from seawater as it passes in series through a tandem cartridge consisting of twin beds of ion exchange resin impregnated with cupric ferrocyanide. When seawater passes through this cartridge at a constant flow-rate, collection efficiencies of each bed are the same, allowing calculation of the Cs nuclide con- centration. The cartridge is made of inexpensive, readily available, PVC pipe fittings and is easily deployed under various field conditions. Thousands

of liters of seawater can be stripped of Cs, sub- stantially improving the sensitivity of measurement of ~34Cs and mCs. WHOI, Woods Hole, Mass. 02543, USA.

C130. Organic compounds 84:6012

D'Arrigo, J.S., 1984. Surface properties of micro- bubble-surfactant monolayers at the air/water interface. J. Colloid Interface Sci., 100(1):106- 111.

The existence of long-lived microbubbles in natural waters has been postulated for many years. The surface properties of the microbubble-surfactant complex are studied using a Langmuir trough apparatus. Biologically derived glycopeptide-acyl lipid complexes form a highly insoluble monolayer at the air-water interface under appropriate salinity and pH conditions. Dept. of Appl. Math., Australian Natl. Univ., Canberra, 2600 Australia. (bwt)

84:6013 D'Arrigo, J.S., C. Saiz-Jimenez and N.S. Reimer,

1984. Geochemical properties and biochemical composition of the surfactant mixture surrounding natural microbubbles in aqueous media. J. Colloid Interface Sci., 100(1):96-105.

Hydrophobic surfactants in an aqueous extract from soil are characterized by elemental, infrared, x-ray diffraction and pyrolysis mass spectroscopic anal- ysis. Oxygen group/metal ion interactions appear likely. The surfactants appear to be heterogeneous glycopeptide-lipopolysaccharide complexes; the gly- copeptide probably is derived from chlorophyll- protein material of green algae and higher plants. Dept. of Appl. Math., Australian Natl. Univ., Canberra 2600, Australia. (bwt)

84:6014 Repeta, D.J. and R.B. Gagosian, 1984. Transfor-

marion reactions and recycling of carotenoids and chlorins in the Peru Upwelling region (15°S, 75°W). Geochim. cosmochim. Acta, 48(6):1265- 1277.

Fucoxanthin, diadinoxanthin, diatoxanthin, caro- tene, and peridinin constitute >95% of the total carotenoid pigments in suspended particulate matter samples. Sediment trap and zooplankton fecal pellet samples contained significant amounts of carotenoid transformation products. The distribution of specific transformation products within the samples suggests that heterotrophic ester hydrolysis is a general

OLR (1984) 31 (12) C. Chemical Oceanography 859

transformation pathway operative in the water column on a wide suite of organic esters. Epoxide rearrangement and dehydration appear to occur over a longer time scale and are more typical of sedimentary environments. Chem. Dept., Columbia Univ., New York, N.Y. 10027, USA.

84:6015 Sun, Yushan and Huaji Liu, 1984. Some new criteria

on judging aromatidty: four physical effects of aromatic pyrazolones and aromatic hydrocarbons in solid state. J. Shandong Coll. Oceanol., 14(1): 68-74. (In Chinese, English abstract.) Shandong Coll. of Oceanol., Qingdao, People's Republic of China.

C140. Nutrients

84:6016 Baeyens, Willy, J.-P. Mommaerts, Leo Goeyens,

Frank Dehairs, Hugues Dedeurwaerder and Ghislain Decadt, 1984. Dynamic patterns of dissolved nitrogen in the Southern Bight of the North Sea. Estuar. coast. Shelf Sci., 18(5):499- 510. Lab. voor Analyt. Scheikunde, Vrije Univ., Brussels, Belgium.

84:6017 Gu, Hongkan, Xiaoxian Xiong, Mingxing Liu and

Yan Li, 1981. Marine geochemistry of nitrogen near an estuary of the Yangtze River. I. J. Shandong Coll. Oceanol., 11(4):37-46. (In Chi- nese, English abstract.) Inst. of Oceanol., Acad. Sinica, People's Republic of China.

84:6018 Schlitz, R.J. and E.B. Cohen, 1984. A nitrogen budget

for the Gulf of Maine and Georges Bank. Biol. Oceanogr., 3(2):203-222.

The mean N budget is calculated from N demand for observed primary production and N importation and regeneration; oceanic transport, river discharge, and rainfall are considered. The system does not appear to be nutrient limited, with supply exceeding demand by 7%. Advection accounts for about 30% of the demand; the remainder is met by regeneration. Even during periods of high primary production the data suggest that the phytoplankton are not nutrient limited. Although the present budget shows zoo- plankton regeneration as the dominant pathway of nitrogen supply, the potential exists for the system to be dominated by bacterial regeneration. NOAA, NMFS, NEFC, Woods Hole, Mass. 02543, USA.

C150. Particulate matter

84:6019 Bartholdy, Jesper, 1984. Transport of suspended

matter in a bar-built Danish estuary. Estuar. coast. Shelf Sci., 18(5):527-541. Dept. of Geogr., Univ. of Copenhagen, Haraldsgade 68, DK- 2100, Copenhagen 0, Denmark.

84:6020 Youakim, Sami and H.M. Reiswig, 1984. The

distribution and flux of particulate matter in the Bideford River Estuary, Prince Edward Island, Canada. Estuar. coast. Shelf Sci., 18(5):511-525. The Redpath Mus. and the Inst. of Oceanogr., McGill Univ., Montreal, Que. H3A 2K6, Can- ada.

C180. Geochemistry, biogeochemistry (see also D-SUBMARINE GEOLOGY AND GEO- PHYSICS)

84:6021 Benson, B.B. and Daniel Krause Jr., 1984. The

concentration and isotopic fractionation of oxygen dissolved in freshwater and seawater in equilib- rium with the atmosphere. Limnol. Oceanogr., 29(3):620-632.

Unit standard atmospheric concentrations (USAC) in freshwater and seawater in equilibrium with air at a total pressure of 1 atmosphere are calculated; errors are _+0.1%. Tables and equations are pre- sented for obtaining accurate USAC values in the ranges 0°< t<40°C and 0 < S < 4 0 ppt. Procedures are given for calculating SAC at pressures different from 1 atm. The presence of sea salt has a negligible effect on the fractionation of oxygen isotopes during solution. Dept. of Phys., Amherst Coll., Amherst, Mass. 01002, USA.

84:6022 Bernat, M. et al., 1984. Behaviour of metallic and

radioactive elements in lagoonai sediments: the example of the Caner-St. Nazalre Pond (Med- iterranean coast). Estuar. coast. Shelf Sci., 18(5): 557-570.

The behaviour of Ca, Mg, Na, K, Fe, Mn, Zn and radionuclides (U, Th, Pb, Ra) was studied in water, suspensions and sediments of an euxinic lagoon. Redox conditions, the nature of inorganic and organic supports and the sedimentation rate at the sediment-water interface were emphasized. Gr. de Rech. de Sedim. et Geochronol. Mar., Univ. de Nice, France.