This study examined the nontraditional career choice goals of 302 Mexican American adolescent men using an extended version of Lent, Brown, and Hackett’s (1994) career choice model. It was hypothesized that several background contextual variables (e.g., acculturation level, parental support, perceived occupational gender barriers) would predict nontraditional career self-efficacy. Nontraditional career self-efficacy was hypothesized to predict nontraditional career interests, and both nontraditional career self-efficacy and nontraditional career interests would predict nontraditional career choice goals. Results supported a modified path model. Mexican American adolescent men’s nontraditional career self-efficacy was predicted by acculturation level and parental support. Additionally, nontraditional career self-efficacy predicted nontraditional career interests, and expressed choice of nontraditional careers was predicted by nontraditional career interests and father’s career nontraditionality. Implications to career counseling with Mexican American adolescent men are discussed.

Soils surrounding cattle dips in Australia are known to be highly contaminated with As and are potentially of major concern to the environment and human health. A study of 11 dip sites in northern New South Wales (NSW) has revealed considerable surface soil (0-10 cm) contamination with As (37-3542 mg As kg ' soil). In addition it was shown that considerable movement of As down through the soils had occurred with concentrations at 20 to 40 cm ranging from 57 to 2282 mg As kg~' soil. At one particular site, an As concentration of above 14 000 mg As kg~' soil was determined at a depth of 40 to 45 cm. A sequential fractionation scheme, based on a soil P fractionation, was developed to assess the chemical nature, and thus the potential bioavailability and mobility of As, at the sites. Soil As is separated into six fractions with (i) anion exchange resin, (ii) NaHCO,, (iii) NaOH, (iv) NaOH following sonication, (v) HC1, and (vi) HC1/HNO,. Although substantial differences between sites and soil depths were present, some general trends were apparent. Most sites contained substantial concentrations of As in the two most labile fractions, indicating high potential for phytotoxicity and leaching. The bulk of the contaminant As at the sites seemed to be associated with soil amorphous Fe and Al minerals.

The most common source of elevated As concentrations in the Australian environment are attributable to anthropogenic activities. Mining activities have contributed to the contamination of soil and water primarily in Western Australia and Victoria. However, other anthropogenic activities such as agriculture, forestry and industry have also contaminated soil and water at a localized scale. Currently there are over 1000 As contaminated sites previously used as cattle dips for eradicating cattle ticks. Although As contamination of the environment may be severe enough to limit plant growth there appears to be few other reports identifying the impacts of the contaminants on other organisms, such as fish, mammals and humans. In Australia the impacts of metal/metalloid contamination of the environment are often unnoticed or ignored. However, the impacts of elements such as As may pass unnoticed by the public or regulators due to the perception of the minimal impact a contaminant has on the environment. This paper presents an overview of As in the Australian environment including the sources of As contamination, soil, water and plant As content, and the pathways of exposure.

Unsaturated soils are considered excellent filters for preventing the transport of pathogenic biocolloids to groundwater, but little is known about the actual mechanisms of biocolloid retention. To obtain a better understanding of these processes, a number of visualization experiments were performed and analyzed.

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