Hi Trish! Being that you mentioned feeling it in your biceps, I imagine you are talking about underhand grip barbell rows. Be sure that as you pull the bar back toward your navel you are not additionally bending your arm into a bicep curl. I see this happen a lot. Your arm should start straight and then draw back to about a 90 degree angle. Another thing to think about is how far your hinging at the hip. The further over you hinge the more the weight will challenge the back muscles. If you hardly bend at all, as you pull the bar in you will feel it a bit more in the rear delt as opposed the lats and central back.
Hope this helps!