after completing a bachelors degree in environmental studies at the university of san diego kimber de salvo set out to find a masters degree program that would be able to compliment her passions for both marine science and geology it was not until after meeting with an assistant professor fromtexas a&m universitys department of oceanography dr jessica fitzsimmons that de salvo realized texas a&m was a great fit for her interests and was where she wanted to continue her education she credits this decision to fitzsimmons passion for research along with the innovative project that fitzsimmons pitched to her studying iron colloids in high salinity areas which coincided with her own interests i found jess and fell in love with her enthusiasm for science; she is one of the most passionate scientists i have ever met said de salvo i was also captivated by this project because it would pioneer a new analytical method in oceanography this new approach had never been done before and i knew it could contribute to the scientific community field research at the darling marine center during her time in the oceanography masters program de salvo had the opportunity to conduct field research at the university of mainedarling marine center there she was able to collect precious samples for her research which was not an easy job while doing field research collecting water samples in maine de salvo and colleagues weathered a wind storm that knocked out the centers power leaving them with only one generator for the entire facility all of her samples were destroyed at the darling marine center there was a storm with up to 60 mph wind gusts she said trees had fallen power outages lasted for 10 days and when you have precious samples thats terrifying especially if they have to be kept frozen without a generator to keep her samples frozen they thawed causing de salvo to have to stay another three weeks to re-do her field research and re-take samples she persevered and was able to finish the work shed started she battled weeks-long power outages freezing temperatures and just about every technical difficulty that her instruments could provide fitzsimmons said yet she still produced beautiful data and graduated on time with a fantastic new analytical method mastering new methods de salvos masters research focused primarily on iron colloids in the ocean iron colloids a subset of dissolved iron may contribute a significant source of bioavailable iron to phytoplankton the main primary producers of the ocean in order for phytoplankton to perform photosynthesis and produce more than half of the worlds oxygen they need iron with large areas of the ocean being iron-limited it is imperative to understand the sources of bioavailable iron de salvos background in geology and marine science made it an easy decision to jump on-board with colloidal iron research these iron colloids are a not-fully-dissolved chunky material that does not sink in the water column she said thus iron colloids could be readily available and crucial source of iron for phytoplankton which live near the surface of the ocean her research generated interesting results i found out that iron colloids are actually dynamic and there are seven different class sizes with varying chemical characteristics that were found throughout all of my samples in different locations de salvo said closer to land we found similar trends as far offshore which was really interesting scientists have thought of colloidal iron being bound to organics as a tight-knit relationship; and we found out that relationship may not be as close knit as previously thought this is the first study to evaluate this chemical composition as a function of colloidal size in the ocean along with these results de salvo fitzsimmons and their collaborator dr mark wells from the university of maine invented and refined a method of revealing the chemical composition of iron colloids as a function of size using combined filtration and chemical sensor technologies it was crazy because the standard operating procedures for these methods had not been achieved in the ocean before and we had to figure out how to develop the method de salvo said kimber's new method can for the first time reveal the chemical composition of iron as a function of size in high-salt seawater solutions fitzsimmons said her new method is at the cutting-edge of trace metal oceanography today